Greys Anatomy

Meet Meredith Grey. Daughter of famous surgeon Ellis Grey and currently recovering from a one-night stand. She shoos away her evenings companion, saying shell be late for her first day of work. She is a first year intern at Seattle Grace Hospital and is working alongside some colorful characters. Cristina Yang is a highly competitive Stanford graduate who befriends Meredith. George OMalley is a quirky warm hearted man who learns a lesson or two on his first day. Izzie Stevens is a former model who doesnt get any special treatment on her first day. And Alex Karev is an arrogant jerk who misdiagnoses a patient on his first shift. Overseeing them is Miranda Bailey, (not-so-) affectionately dubbed The Nazi. Meredith also gets a surprise when she realizes that her friend from the night before is a co-worker, and even worse, her boss.

A bike race injures several pedestrians as well as well as participants. One pedestrian is left brain dead. Christina and Issie wish to use his organs for organ donation but with Christinas detachment and Issies ever hopeful attitude that the man will recover, they will find the organ harvesting process an emotional one. Preston faces feelings of his dislike of organ harvesting - as a surgeon, he likes saving lives; harvesting organs doesnt save the persons life. George deals with Mac, a friend of the chief, who wont stop flirting with him. He is in need of a new liver. Meredith is fed up with Alex showing off as she continues trying to push Derek away. She also is reaching the limits of Issies sunshine and Georges politeness as she goes on living with them. Then there is their desire to see Merediths mothers medical tapes. Getting through the day, Meredith realizes the keys to winning the race.

Meredith realizes that she must take on a lot more responsibility when she is told that her mother needs to sign over all of her assets to her. As Izzie prepares to have a party for her boyfriend Hank (the scale of which is unknown to Meredith), Meredith has her first heart surgery. During the surgery she fears that she has fallen asleep and damaged the patients heart. Meanwhile, Cristina and Burke hit it off. At the party, Meredith and Derek get caught together by Dr. Bailey.

Derek and Meredith try (unsuccessfully) to be discreet as they spend the night together at Merediths house, but their haggard appearance speaks volumes to everyone - including Bailey, who warns Meredith to end the relationship. Meanwhile George suspects an anesthesiologist of drinking on the job but is reluctant to speak up about it, Alex treats a former competitor who now finds honor in self-mutilation, Izzie has to deal with a patient who wont let go of his girlfriend - literally, and Cristina seems to be battling a case of the flu.

A sexually transmitted disease breaks out and affects several members of the hospital staff. Chief Webber promptly calls a meeting. Meanwhile, the chief reluctantly tells Dr. Derek Shepherd about his own medical concerns. Izzie and Cristina worry about a patients wife and daughter who cant agree on his care. Burke treats his college buddy Bill, whose medical diagnosis raises some questions regarding his wifes actions. Then just as Meredith and Derek grow more intimate, a surprise is revealed.

Theres tension between Meredith and Addison. We find out why Derek and Addison arent together. Bailey puts George on an impossible case. The rest of the interns operate on a family that was just in a car accident.

As Cristina tries to recover, she proves to be a very difficult patient, and a visit from her mother doesnt improve her demeanor any. And Merediths mother, Dr. Ellis Grey, has the hospital staff running in circles.

Train Wreck victims come to Seattle Grace and all staff gets called in. Everyone deals with really weird cases. Except Addison and Izzie. They work with a woman who is pregnant.

Meredith tries to avoid the Shepherds. Cristina and Burke go out on a date and end up getting caught up in their jobs. Derek asks Meredith not to ignore him until Addison comes walking around the corner.

Dorie Russell is waiting for quintuplets, all 5 girls. Her husband seems more concerned than she is but she is set to bring her babies to their term of 36 weeks. All the departments are on call for the quintuplets as three of them have developped problems of different kinds. Meredith last nights stand shows up at the hospital with priapism and they need to call Derek Sheperd for a consult which puts Meredith in a very embarassing position. Alex and Derek must take care of a patient who has a tumor inducing thirst as a side effect. On the love side, Alex and Izzie are having some slight sexual problems, while Meredith goes on adding one night stands and Cristina is thrown off course by being "keyed."

The holiday season has started but not everyone is in a festive mood. This is Alexs last day in the hospital unless he passes his boards practical exam the next day, thus everyone helps him to review so that he succeeds. However, Izzie is not happy about the others helping him and Meredith has to remind her of the true spirit of the Christmas holiday. Justin is in need of a new heart. One is available but he does not want it because he does not believe Santa gave it to him as his mother said. Cristina and Burke, both handling Justins case, have opposing views on the matter due to their different stances on religion. Despite a reconciliation with his wife, Derek isnt in a festive mood. George has a simple case of a woman who has a bleeding ulcer, he realizes that the ulcer is caused by her entourage but fails to keep them away, with the consequence that it perforates.

Meredith and Cristina lie to each other and themselves about their relationships with McDreamy and Burke, respectively. George is given a hard task to expel a discharged and defiant woman from the hospital. Alex learns his fate after re-taking his medical exams. At the same time Izzie is trying to stop Alex from making stupid decisions when a patient that doesnt speak English is lied to by her coach. George, Cristina, and Alex compete in a hot dog eating competition.

An explosive case arrives at the O.R. that might endanger all the lives of the people working there, which leads Dr. Burke to declare a "Code Black" for the hospital. Bailey worries where her husband is as she is in labor. Also Izzie and Alex may be creating some heat.

Derek and Addisons relationship is rocked to the core when a former friend comes to Seattle Grace and his presence promises to shake things up for a few members of the staff. Burke and Cristinas relationship is affected when one of her secrets is outted. Alex and Izzie are having similar reactions to their closet scenes during the Code Black crisis. On top of this a cocky doctor shows up to piss Derek off in all kinds of ways. A patient is suffering from constant orgasms and her condition sparks interesting conversations among the staff. George is trying to figure out how to get Meredith to see him as more than just a housemate. Another patient, that Derek is treating, is dealing with a rare disorder and needs his parents support and understanding. Burke has a patient who inspires him to talk to Meredith and Cristina about doing what they say they will. Meanwhile, Meredith learns more about her family (in fact maybe more than she may have wanted to know) through her parents.

The doctors are up to their necks in their usual levels of drama. Meredith is dealing with the backlash of sleeping with George, George and Burke are bonding in ways that bother and creep out Cristina, Cristina gets stuck on diaper duty, Bailey gets involved in a case even though shes still supposed to be on maternity leave, Addison and Derek have a talk, and Izzie is still flaking on Alex for Denny Duquette, the heart patient who didnt get a heart. In the patients-of-the-week department weve got a very pregnant woman, a hockey player who desires medically unnessasary amputation, and a woman with a fork in her neck who happens to be dying and has a struggling marriage.

Meredith and Izzie take up knitting. Derek operates on Andrew, a spelling bee champ with a serious head injury. Bailey gets in on Andrews surgery because shes worried that her coworkers wont recognize her Nazi-status now that shes a mother. Addisons patient has an unborn baby with medical issues. After Alex fails to bite his tongue when a terminal patient routinely lies to her daughter about her health he gets a lesson in bedside manners from Burke. George also begins to overstay his welcome at Burkes apartment after Callie visits him. Meredith has more confusing and uncomfortable encounters with members of her family. One of the female doctors meets a veterinarian named Finn. Izzie flirts with Denny and they play more naughty-Scrabble. Meredith, Derek, and Addison sarcastically take another small stab at their friendships.

The staff attends to an intern from another hospital who has short-term memory loss. This intern, named Marshall, also has caused a car accident that involved a married couple, their unborn baby and the womans parents who the staff are also treating. The pregnant woman is named Melanie and she will die but her baby may survive. One of the female interns meets up with a woman from her past who is planning on having a family of her own. Cristina is in a good mood although Alex, Izzie, George, and Meredith are having problems but in the meantime Burke hasnt forgiven Cristina for her late night faux pas. Meredith and Izzie are making fun of Callies household habits and George and Callie are having a fight because of Georges roommates. Addison is continuing to own Alex and hes upset about it. Denny has an outburst at Izzie and Derek has an outburst at Meredith.

Denny needs a heart or else. Izzie and George go crazy trying to get him one. Derek has the life of a friend in his hands as he operates on Burke who has been shot. Burke cannot operate on Denny after Dennys heart stopped and now Denny is in a dire condition. Cristina gets put in charge of the ER and she is worried about Burke.

Meredith must make an important choice about which path she wants to follow to determine the future of her love life. While she considers her future she and others have flashbacks of their pasts. Cristina spends time with Burke while he recovers. Webber and Adele have a conversation after he spends the night at the hospital. Everyone attempts to deal with Izzies choice to quit. George seeks relationship advice from Derek.

The staff tries to prevent a patient from getting an elective surgery. Cristina tries to help Preston cope with the after effects of his surgery. A patient bails on their surgery. Someone goes to a bed-and breakfast. Alex deals with a patient who has had a high amount of injuries in the past. A man undergoes surgery. Before the surgery his wife was only somewhat supportive, but the results may be too much for her to handle. Izzie tries to go back to the hospital for the first time since Denny died. One childs constant visits are noted by a nurse. Two foster patients are met with suspicions of child abuse. George and Callies relationship moves forward.

Derek learns one of Addisons secrets. Bailey talks about motherhood and depression to a mother who is set to have cancer surgery and who seems to not care about any decisions concerning the future. A resident is fiercely questioned about the death of a male patient. An ex-couple meet before lunch and get stuck - Meredith and Addison work on their case. Things get awkward when the ex-couples daughter, Michelle, arrives at the hospital.

The men of Seattle Grace go on a camping trip together, Addison and Callie must team up to work on a patient, Meredith assists Sloan with a procedure unlike any she has experienced, and, suspicious of her recent actions at the hospital, Bailey confronts Cristina. A 9-year-old is seen by Cristina after he swallowed Monopoly game pieces. A pregnant 25-year-old, is brought in after she slipped in the shower. She doesnt want medicine to take away the pain from her injury so not to put her babys growth in jeopardy. Doctors take care of Daniel, a man who wants a sexual reassignment surgery and who now goes under the name Donna. Accompanying Daniel is his wife of the past 10 years, who was surprised to see him want that surgery but, after much struggling, decided to stay by his side.

A traumatic car accident fills the ER. Izzie pushes the boundaries of her probation. Cristina has a crisis of conscience about her deceptive teamwork with Burke.

Meredith discovers that Derek has a problem sleeping while her father comes to visit the hospital. Georges father is moving from one surgery to another. A patient named Heather checks into the hospital. Heather is 17 and has a nasty attitude that results from her medical condition and all the surgeries it has required her to have. Izzie has an emotional breakdown when she tries to hand over something very important to her. Georges family comes to visit to celebrate his fathers surgery. Cristina and Burke are playing Uncle.

After the Chief announces his retirement, rumors begin to circulate on his departure and successor. Mark is determined to leave Seattle for good but Meredith accidentally has him stay after letting him know of the open Chief position. Derek is angry at Meredith for causing Mark to stay in Seattle, but soon realizes that she is not the reason he is really angry. The attending physicians at Seattle Grace Hospital fight to get Richards attention, but he expresses his disappointment. He also displays his lack of support in Baileys plan to create a free medical clinic, but she ultimately goes through with her plan when Izzie offers to spend her entire 8.7 million dollar inheritance on the project. George, devastated after his fathers death, uses sex to overcome his grief, and eventually proposes to Callie. Cristina and Burke still dont speak to each other, but he breaks the agreement when he proposes to her. Richard endeavors to reunite with his wife, Adele, and decides to retire, only to come home and find his wife with another man.

A mass trauma situation, which turns out to be a ferryboat accident, challenges the whole staff of Seattle Grace Hospital. Richard finds difficulty in coping with his separation from his wife and dyes his hair "for the ladies", which becomes an internal joke between Mark, Burke and Derek. Cristina tries to tell Meredith about her upcoming marriage, but doesnt have the strength to. George promises to find a womans son, who has been separated from her at the accident. The woman refuses to go into surgery until she is assured that her son is alive. Izzie has to take care of a man who got stuck between two cars on the ferry, but nobody helps her due to the large number of injured people. Alex rescues a pregnant woman with severe wounds on her face, and promises to take care of her. Meredith looks after a girl who has been separated from her mother after the accident, but accidentally falls into the water and drowns, with nobody but the little girl as a witness.

Everyone is pushing for Meredith to survive, or in this case to be revived. People are still dealing with the fallout from the ferry disaster. A young man named Lucas is having problems with brain-mouth coordination. Someone else dies.

In the aftermath of Izzies affair with George, he doesnt seem to remember anything. Callie lets him know that they will be having dinner with her father, but George does not make a good impression, being hung over after last nights events. Alex helps Jane Doe choose how her face will look like after Mark Sloan performs reconstructive surgery on her. He also gives her a new perspective on how the world will see her from then on. The hospital board begins interviewing the candidates for the Chiefs position, and Colin Marlow intimidates everyone with his ten-year plan. However, after taking advice from Bailey, Mark seems to have convinced the board that he is appropriate for the job, despite continuous efforts from Derek, Burke and Addison, whose careers in the hospital outlast his. Izzie seeks advice from Addison about her affair, telling her sleeping with George felt right, despite him being married. Mark takes Meredith as his intern for the day in order to impress the Chief, something that Derek doesnt approve of, feeling that Mark has become manipulative.

The attendings vie to be Chief. Two people who havent slept together before, will. McSteamys 60-day vow of chastity has a conclusion. We meet a boss, his assistant, and his wife. We also get to see someone being treated in the clinic. Derek has more questions about his relationship with Meredith. The chairman of the hospital board is admitted as patient. Callie confronts Izzie about her relationship with George.

Meredith works on her relationship with Susan and Thatcher. Cristina has to deal with her mother and Burkes. Alex continues to tend to Jane Doe/Ava. Meredith and Dereks relationship has a problem that needs resolution quick. Addison sees her god-daughter which leads to a job offer outside of Seattle. Derek has to perform surgery. Burke has a reservation about marrying Cristina. Many new people guest star in the course of Addisons road trip to California. Addison considers moving to be closer to her old med school friends until she discovers that drama she wishes to leave behind isnt exclusive to Seattle. Her friends who she thought had it all, are divorced. A pregnant woman must discover who the father of her child is.

The mountain climbers lie about the axe in their friends head, telling Derek that it accidentally got there. During surgery, he and George discover that it was deliberately put there, and one of the climbers admit that he was trying to "put him out of his misery". Adele is saved after Richard finds her lying in the bathroom and is stabilized, but soon suffers a miscarriage. Richard learns Adele was actually pregnant with his son, not someone she had one night stand with. Bailey is disappointed to see that Callie is the new Chief Resident and begins to question her abilities as a surgeon. Richard chooses Derek as Chief of Surgery, but he refuses, telling him that he isnt done doing what he does best. Cristina and Burkes wedding day arrives, but Cristina wont stay out of the hospital. However, Cristinas nervousness results in Burkes realizing that he does not love the real Cristina and leaves her. Meredith and Derek are uncertain about their future and despite Derek admitting that she is the love of his life, they call their relationship over.

A patient is in the hospital because they fell asleep in a hazardous situation. A patients home laboratory blew up in an apartment building and the victims flood the hospital. Alex investigates the cause of the incident by talking to a really old guy who lived in the building. Jane Burke shows up to deal with what her son left behind. Lexie tries to talk to Meredith. Callie is overwhelmed by her new position while Bailey is searching for things to do.

A face familiar to one of the year-twos shows up and dredges up issues that were never really dealt with. A teen soccer player needs counseling because of his father and surgery for an injury he sustained while playing the game. Another patients, named Courtney, finds out that her cancer is back.

A patient comes to the ER with a dream and a condition which may prevent him form realizing it. Two patients are competing to win something big. One of them convinces an intern to take their place.

There has been a bus crash and the patients are in the ER. Meredith and Dereks relationship gets more complicated when he dates a fellow doctor. Merediths dad goes to visit her at the hospital.

Meredith works furiously to save a paramedic trapped in an ambulance; Lexie holds the life of a patient in her hands; Derek must rely on a nurse to save a patient; Bailey struggles to balance her personal life with her work.

Time has passed but not much has changed. Sexual angst still runs rampant in the halls of Seattle Grace. Derek and Rose have been dating and Meredith has noticed the activities of her current off-again ex-boyfriend. The doctors are in the midst of a competition.

The clinical trial continues to make progress. The anti-McSteamy club creates new initiatives but that isnt enough to stop one woman from spending time with him. Christina is affected by Burkes career developments.

A couple undergoes surgery. Derek and Merediths clinical trial gets a second shot from a new patient. Izzie helps Alex. McSteamy hooks up with someone.

As Meredith and Derek begin to find that their "happily ever after" is anything but easy, Cristina develops a crush on a military doctor who brings in a trauma patient. Meanwhile, the Chief and his staff cope with the news that Seattle Grace is no longer considered a top-tier teaching hospital.

When the plumbing springs a leak, chaos breaks out at Seattle Grace as the Chief tries to put in place new teaching methods. Meanwhile, George takes his residency exam; and Derek attempts to get Merediths roommates to move out, much to their surprise.

Bailey heads up a "domino procedure" in which each surgery hinges on the one preceding it. Meanwhile, Derek gets sole credit for the brain-tumor study he did with Meredith; Lexie tries to get George to notice her romantically; and Sloan counsels a desperate Callie in the ways of love.

When the Chief makes an announcement that a solo surgery is up as an award, the residents are sent into a frenzy all trying to get an edge over one another. Meanwhile, Derek asks Bailey for advice after Cristina continues to interfere in his relationship with Meredith. Elsewhere, Erica uncovers a shocking connection between a resident and a patient.

Meredith, Cristina and Bailey come to Lexie and Sadies rescue when a routine surgery goes horribly wrong, as Owen and Derek treat a man seriously injured while sleepwalking and Mark comforts the sleepwalkers distraught daughter.

Bailey teams with Seattle Graces new pediatric surgeon, Dr. Arizona Robbins, to save the life of a young patient near and dear to her heart, as the admittance of a death row inmate at the hospital stirs anger in Derek and further erodes Meredith and Cristinas friendship; meanwhile, Callie and Sloan work as a team to fight their respective attractions to Sadie and Lexie, and Izzie tells Alex that shes seeing Denny.

Bailey grows desperate as a patients condition becomes more and more dire. Everyone in the hospital is stepping up to try to find the boy a new organ donor, including Meredith, who considers a death row patients wish to die before execution. Meanwhile, an injury leaves Mark in a compromising position in the OR and Cristina awkwardly avoids Owen.

Addison, Naomi and Sam rush the ailing Archer to Seattle Grace and reunite with old friends Derek and Mark to help save his life; meanwhile, Izzie employs her fellow doctors in a medical game designed to help teach the interns, and Owen runs into a significant someone from his past

Derek decides to quit after learning that more of his patients have died than survived; Izzies interns make an unsettling discovery about "Patient X."

All eyes are on Derek as he is set to perform his first surgery after his breakdown; attention is also set on Izzie, whose medical condition requires her to undergo a difficult surgery; and Owen has another PTSD episode that injures Cristina and traumatizes both of them, throwing the future of their relationship into question.

As preparations continue for Meredith and Dereks wedding, Izzie receives a surprise hospital visit from her handful-of-a-mother, Robbie. Meanwhile, a newly sober Thatcher visits his daughters, Meredith and Lexie, in order to make amends, and the Chief and Meredith bitterly fight over a controversial medical case.

In the first part of the two hour season finale, Izzie spends time with a fellow cancer patient and contemplates whether or not to undergo a risky surgery, as Mark is ready to take his relationship with Lexie to the next level and a patient makes Owen reassess his place at Seattle Grace.

The hospital staff is left to deal with the aftermath of Georges passing. Hitting the staff hard, they all find unique ways to get through the various stages of grief. Georges mom returns, faced with the difficult task of deciding what to do with his organs.

Several weeks after her near-death experience, a recovering Izzie returns to work. Meanwhile, nervous that there will be layoffs in the hospital in the wake of an announcement from the Chief, the Seattle Grace residents compete to survive the cuts, including Cristina, who attempts to work alongside Arizona in pediatrics. And Bailey and Alexs patients already complex case is further complicated by her schizophrenic son.

The residents of Seattle Grace and Mercy West vie for surgeries and their careers as day one of the hospital merger begins. Meanwhile, Arizona stands by an enraged Callie when her father, Mr. Torres, employs a priest to help convince her to date men, and Izzie experiences the brunt of her new surgical competition.

When Isaac has an inoperable tumor wrapped around his spine, he wants Derek to do the impossible. Derek tests the Chiefs authority when Richard objects to moving forward with the risky surgery.

Owen recruits Dr. Teddy Altman, a former Iraqi veteran, as the new cardiothoracic surgeon. Cristina questions her abilities in the E.R. and relationship with Owen. Izzie returns to Seattle Grace with her high school mentor seeking treatment for his dementia. Richards responsibilities, post-merger, are taking a toll on him.

Mark flies Addison to Seattle to help with a difficult procedure on his pregnant daughter, Sloan, Owen questions Teddys motives when she assigns Cristina the lead on a complicated surgery, and Dereks suspicions are raised when the Chief recruits Meredith to assist with a high profile operation on.

As Derek begins his role as interim chief, he faces a potential lawsuit when Bailey and Merediths patient awakens from anesthesia mid-surgery. Meanwhile, Teddy refuses to place Cristina on her service, as Arizona tests Alex out in Pediatrics, and Mark refuses to speak to a heartbroken Lexie.

In his new role as Chief, Derek restores the hospital lecture series, and Richard, Bailey and Callie present to the group pivotal surgical cases from their pasts Bailey reflects on her first days as a shy resident, Callie looks back on a polio case, and Richard recalls a case in which he and Ellis worked on a patient diagnosed with GRID, a virus later called AIDS.

A patient who needs an extremely difficult surgery comes to Seattle Grace, and its Richard and Owen who vie for the opportunity to tackle it. But the decision lies in the hands of Derek, who deems that Owen should take on the surgery, leaving Richard bitter. Meanwhile, Bailey deals with her own personal struggles when she nervously prepares for another date with Ben.

When Alexs younger brother, Aaron, shows up at Seattle Grace-Mercy West with a hernia, its up to Alex to get Baileys approval for his pro bono surgery. Matters are further complicated when Aaron discloses that his family has not heard from Alex since he arrived in Seattle, and parts of Alexs past long kept secret are revealed to his friends and fellow doctors.

Bailey preps the team with mandatory sensitivity training prior to admitting a 700-pound patient with compounded medical issues, and the case proves to be challenging in every sense of the word. Meanwhile Derek has to come face to face with a former patients husband in a wrongful death deposition, and spending time with a heart patients daughter opens up some old wounds for Cristina.

Seattle Grace Hospital is hit with a crisis like no other in its history.

In the wake of the shooting at Seattle Grace-Mercy West, the doctors find themselves in a frenzy: Christina and Owen will be getting married, and others are trying to deal with the recent blood bath. Derek is arrested for speeding!

Issues surface when Dereks estranged sister, Amelia (Caterina Scorsone), visits unexpectedly; Meredith and Derek continue to try to ease Cristina back into surgery.

As part of their training, Seattle Graces residents are put in charge; the attending surgeons compete for a million-dollar grant.

Owen puts the residents through a rigorous trauma certification drill; Cristina is left alone to monitor an ill lung transplant patient.

The residents are on their own with the dreaded night shifts while the attendings go out to play to celebrate Dereks grant for his clinical trial.

A gunman opens fire at a local college, sending mass casualties to the hospital; Arizonas return is not warmly received.

Derek breaks ground on his Alzheimers clinical trial and Meredith cant help but feel left out; Baileys attempt to take the hospital into the age of new media with live tweets from the OR does not go over well with the Chief; and Callie, Mark and Arizona must learn to navigate through the pregnancy together, which starts off with Callie driving her new obstetrician crazy.

Meredith, looking to prove she is Chief Resident material, learns that anything and everything can happen in an hours time when she steps up to run the ER for a night; meanwhile, Bailey sneaks off with Eli and gets into a little mischief, and everyone is surprised when the Chiefs wife, Adele, shows up as one of the ER patients.

Richard is desperate for Derek and Meredith to accept Adele into their Alzheimers trial, but will Adele stand in her own way? Meanwhile Mark and Arizona have conflicting ideas of the kind of baby shower Callie wants, Teddy is freaked out when Henry has another health complication -- leaving them both a little exposed -- and the competitiveness amongst the residents for the Chief Resident position is amplified when Richard receives the green light for his diabetes clinical trial.

Everyone pulls together to help Callie and baby Sofia on their painstaking journeys to recovery in hopes of allowing mother and baby to finally meet; the sudden death of a clinical trial patient has Derek proceeding with more caution while Meredith makes a calculated and risky move; Alex treats a cranky old rich woman dying of cancer and gets an idea for a grandiose endeavor that is sure to get him the Chief Resident spot; and Teddy is pleasantly surprised by the return of a familiar face.

Personal and work pressures are adding up and have Meredith visibly on edge, Owen conducts formal interviews for the Chief Resident position, Cristina grows increasingly defiant, Alex and Lucys undefined relationship gets tested, and Jackson suddenly backs out of the Webbers diabetes trial.

The fifth-year residents return for the first day of a year that will make or break their careers: Meredith faces the consequences of tampering with Dereks clinical trial and is terminated at the hospital; April tries to step up to the plate as Chief Resident in the wake of a giant sinkhole in the middle of Seattle; and Cristina and Owen are still at odds over their drastically different feelings for their unborn child.

The chief makes a decision that shocks everyone at Seattle Grace; Owen and Cristina attempt to find normalcy; April struggles in her new role; the 5th-year residents receive their first solo surgery assignments.

The residents try their hardest to impress surgical great Catherine Avery-who also happens to be Jacksons mother-when she arrives at Seattle Grace to perform a groundbreaking transplant surgery; Arizona and Alex find their hands tied with a confidentiality issue when a familiar patient comes into the ER; meanwhile, a love-struck Teddy throws a dinner party for the couples, and Bailey makes a decision regarding her love life

Owen stresses teamwork and moves his leadership role over to the baseball field when he signs the doctors up for a baseball league, pitting them against their biggest competition, Seattle Presbyterian; Lexie tries to hide her jealous rage when she sees Mark with a new woman, but her emotions get the better of her; Alex fights to keep Zola at Seattle Grace after it is suggested that she be moved to another hospital due to a conflict of interest with Meredith and Derek; and Richard scolds Meredith and Bailey for their feud

Teddy puts her husband’s life in the hands of her peers when Henry is sent to the OR for surgery and she’s called away on another case; Meredith and Derek receive the long-awaited news about Zola; Callie and Jackson come under fire when their patient experiences post-surgery complications; and Meredith and Alex are involved in a life-threatening situation when they travel to a neighboring hospital to tend to a sick newborn, on Grey’s Anatomy

The doctors split into teams for a risky surgery involving conjoined twins; Bailey recruits Meredith to be a buffer between her and Ben when he puts pressure on moving their relationship to a more serious level; Richard teaches Alex a tough lesson in the OR; meanwhile Teddy questions Cristina about what exactly happened to Henry during his surgery.

As Meredith puts Zola to bed and falls asleep, she begins to wonder -- what if her mother had never had Alzheimers and shed had loving, supportive parents? The reverberations of a happy Meredith Grey change the world of Seattle Grace as we know it. What if she had never met Derek in that bar and he had never separated from Addison? What if Callie and Owen had become a couple long before she met Arizona? And what if Bailey never evolved from the meek intern she once was?

Amelia arrives at Seattle Grace to beg Derek to help with the gliosarcoma case; Cristina and Owen have heated arguments during marriage counseling; Alex realizes he needs to improve his people skills in order to be a good doctor.

Derek encourages a hesitant Meredith to work with him again in neurology; Jacksons mother, Catherine Avery, returns to Seattle Grace with a urology fellow and develops an interest in Richard; and Cristina becomes increasingly suspicious of Owens every move. Meanwhile, Alex tries to deny the fact that Morgan may be falling for him.

A devastated Cristina presses Owen to confess the intimate details of his affair; Mark takes his new authority very seriously when he steps in as chief for the day and butts heads with Richard over a patients liver transplant; and Callie deems Meredith ready for the boards, while the rest of the residents continue to stress about the exam. Meanwhile, Callie, Arizona and Bailey plan a much needed ladies night for Teddy.

After eight years of practice, the residents head to San Francisco for their oral boards; sparks fly between Catherine and Richard when they bump into each other at the hotel; Bailey intervenes after Owen and Teddy get into a heated argument about their young car crash patient; and Mark tries to recruit Lexie for one of his cases. Meanwhile, Alex feels guilty for being away from the hospital when Tommys health begins to fail.

The residents determine their future as they make their final decisions regarding post residency positions; Mark admits to Derek that he is torn between his love for Lexie and the fact that Julia can give him everything hes ever wanted; Ben plans something extra special for Bailey, but she is preoccupied with her work; and Arizona encourages her childhood friend, Nick, to have surgery. Meanwhile a couple on their third honeymoon come to the hospital complaining of mysterious symptoms.

The doctors of Seattle Grace are faced with the aftermath of last seasons plane crash. As they try to move on with their lives, they must learn to adapt to the changes, cope with their losses and move forward with their relationships and careers.

The survivors from the crash are asked to make an almost impossible decision that will affect the rest of their lives. Meanwhile, tension grows between Jackson and April after theyre forced to work together, and Alex tries to restrain himself with one of the interns.

In this Meredith & Cristina-centric episode, the two friends continue to cope with life after the plane crash and their ever-growing responsibilities at their respective hospitals. As Meredith juggles taking care of Zola with a case that hits close to home, Cristina assists Dr. Thomas on a challenging heart surgery.

Cristina and Owen continue to figure out their relationship amidst the pending lawsuit; and Bailey argues with Ben over plans for their upcoming nuptials. Meanwhile, Callie recruits Jackson to help find a solution to Dereks hand, but he is preoccupied by a shocking situation with April.

As the rest of the doctors prepare for Baileys wedding, Richard helps her through a bout of pre-wedding jitters. Meanwhile, Lizzie butts heads with Meredith, and Callie and Jackson try to convince Derek to participate in a risky surgery that could fix his hand.

Meredith, Derek, Cristina and Arizona receive big news regarding the plane crash lawsuit, Richard avoids Catherines romantic advances and Jackson takes on one of Mark Sloans old patients. Meanwhile, Derek begins recovery on his hand.

As Derek and April work around the clock to find a solution for the hospital, Cristina struggles to respect the wishes of a family whose son is dying. Meanwhile, Arizona empathizes with a teenager who faces problems similar to her own.

As the hospital spirals closer to financial ruin, Owen must make some tough decisions, which includes foregoing an expensive surgery that could save the life of a child. Meanwhile, Alex and Jo work together to save the life of an infant, and April asks Jackson for dating advice.

The discord and chaos created by the hospitals new management team causes one physician to question his future at Seattle Grace. Meanwhile, the doctors and the interns must juggle several transplant surgeries at once, each coming with its own set of obstacles.

A gas tanker explodes on a Seattle highway, causing multiple injuries, including paramedic Matthew. Meredith and Jo help a frantic mother whose child is suffering from a mysterious illness. Owen bonds with a young boy whose parents are in critical condition. Meanwhile true colors are revealed when Alex is forced to work with Jos boyfriend on an ailing patient.

Bailey finds herself at the center of a CDC investigation surrounding the death of several of her patients, as Jackson and the rest of the board members argue over how to address the crisis with the public. Meanwhile, Cristina teases Alex about his unspoken feelings for Jo, and Owen continues to take special care of Ethan as the condition of his parents remains uncertain.

The doctors of Grey Sloan Memorial Hospital prepare for a super storm heading towards Seattle. Owens desire to be a parent gets stronger as he becomes closer to Ethan. One wrong move puts the lives of Meredith and her baby in jeopardy. Meanwhile, Jo looks to Alex for help in a moment of crisis, and one doctor gets the shock of her life.

The Grey Sloan Memorial Hospital doctors are faced with the devastation left by the storm. A giant mudslide in Seattle injures a group of first responders and citizens, causing the already short handed ER to spring into action. Meanwhile, Meredith is faced with a tough decision that will affect the life of a loved one, Callie is rocked by the reality of Arizona’s infidelity, and Richard’s life is in extreme danger.

Derek and Meredith adjust to life at home with their newborn; Arizona tries to repair her marriage; Jackson and Owen clash over financial issues.

Meredith struggles to balance her roles as a surgeon and a mother when she returns to work; Stephanie tries to impress Jacksons mother; Jo becomes overly involved with a patient.

Costumed patients create a challenge for the doctors; Derek and Ben work on a new surgical technique; Richard asks a resident to perform his next surgery, angering Bailey.

When an unexpected malpractice suit turns Callies world upside down, her supportive father arrives and shares an interesting secret with her. Meanwhile, through flashbacks, we learn some surprising details about Callie and Arizonas marriage.

April’s sisters arrive to help celebrate April’s upcoming nuptials and quickly get on her nerves. Matthew and Jackson are forced to work together when they witness a terrible accident, Callie and Arizona work hard to reestablish their relationship and Cristina is pressured to live stream an upcoming surgery. Meanwhile, a familiar face returns to the hospital.

The doctors are faced with the consequences of the events at Aprils wedding. Alex reacts to the news about his father. Callie and Arizona make a decision about their relationship.

Arizona has a bad day which escalates when she advises one of Callies patients on a potential double amputation. Derek goes back on a promise to Callie, and Jo and Stephanie come across an abandoned baby outside the hospital. Meanwhile, the doctors deal with the repercussions of the non-fraternization rule, which include meetings with HR and one doctors suspension.

Cristina imagines the two routes her life can take based on one decision she makes. Meanwhile one of the hospital’s patients decides whether or not to live.

Cristina wont let herself get excited when she is nominated for a Harper Avery award; Alex thinks about making a change; Callie and Derek work with a machine that recognizes emotions.

Jackson is given the daunting task of delivering disappointing news to the doctors. Meanwhile, Dereks sister Amelia drops by for a surprise visit, Richard surprises Catherine in Boston and when Bailey gets frustrated by the slow pace of her research, she makes a risky decision.

With Derek away, Meredith spends time with Amelia and finds out her true feelings about her time in Seattle. Bailey deals with the ramifications of her actions and Callie receives devastating news. Meanwhile, the residents panic after hearing that one of them will be fired

With Cristina gone, a new doctor, Maggie Pierce, making the rounds and Derek wanting to move to Washington DC, Meredith struggles to regain a sense of normalcy both at home and in the hospital. Meanwhile, Callie and Arizona come to a decision about surrogacy, Amelia overhears a big secret, Bailey realizes she will have to fight Alex for Cristina’s board seat and a freak accident causes two teenagers to be caught in a very compromising position.

Owen tries to get Callie to help Veterans Hospital patients with the robotic limb lab. Alex and Merediths friendship makes Jo jealous. Alex and Bailey prepare to go in front of the board.

Callie and Arizona examine their marital problems and whats contributed to them. Meanwhile, Callie devotes herself to the veterans project, Arizona strives to impress Dr. Herman, and Richard seeks guidance from Bailey.

Information about Amelias past emerges and causes problems for her at the hospital.

As Derek prepares for his move to DC, Meredith keeps herself busy at the hospital. Meanwhile, Jackson and April deal with difficult news, and Arizona and Amelia discuss how to best approach Dr. Herman.

After several discussions with Dr. Herman, April and Jackson must face their situation head on and make a difficult decision regarding their unborn child. Catherine arrives in Seattle and bumps into Richard at the hospital. Meanwhile, Meredith tries to find someone to take care of the kids so she can visit Derek for the weekend, and Amelia shows Stephanie some tough love when they work together on a case

The hospital doctors become fascinated with Dr. Herman’s case when Amelia gives a lecture detailing the intricacies of the surgery. Arizona and Herman continue to bond over the amount of cases they are trying to complete before the big surgery. Meanwhile, Bailey brings them a case of a pregnant woman who is close to her heart.

An earthquake shakes the ground at Grey Sloan Memorial Hospital, trapping Maggie in an elevator and threatening Meredith’s long streak of successful surgeries. Meanwhile, Owen gives medical advice to a child over the phone and Ben confides in Jackson.

Meredith, rattled by the latest events, tries to figure out what to do about Derek. Meanwhile, Owen is shocked when his mother is admitted to the hospital.

Upon realizing that Owen and Amelia have been seeing each other behind her back, Meredith comes down hard on her sister-in-law causing Amelia to rethink things. Meanwhile, Catherine springs into action when a man is brought into the hospital after his wife seeks revenge on his cheating ways.

Derek witnesses a horrible car accident and springs into action to save lives.

The doctors of Grey Sloan Memorial Hospital are forced to put their emotions aside when a catastrophic event occurs.

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The pressure is on as a determined Bailey tackles her first day as Chief; meanwhile, Aprils marriage is in jeopardy and she finds herself unable to address her problems; Meredith struggles to juggle all her responsibilities and Amelia works to define her relationship with Owen.

Owen suggests the interns learn a vital lesson on how to break bad news to patients’ families, and Arizona’s 90-year-old patient reassures her that she’s destined to find love again. Meanwhile, the sisters completely forget about the dinner party they’re hosting for everyone.

Grey Sloan Memorial not only welcomes a new transfer resident, but also a patient whos the topic of converstation after accidentally sending his sex tape to his entire congregation. Meanwhile, Richard wrestles with how to progress his relationship with Maggie when an old friend visits the hospital, and April brings in a case of a young boy from the Middle-East.

Midseason Finale - As the rumor mill around the hospital continues to spiral out of control, Grey Sloan Memorial is flooded with injured firefighters from a nearby wildfire. Maggie struggles to keep things with Andrew professional at work; meanwhile, Jo questions Alex’s priorities.

Everybody attempts to deals with Merediths trauma as Maggie and Callie perform a risky, experimental surgery on a teenager. Nathan and Owen continue to be at odds. Maggie and Andrews relationship continues to progress.

A patient from Merediths very first surgery as an Intern is readmitted to Grey Sloan Memorial with a new aneurysm, and Amelia takes her case. Meanwhile, Maggie suspects that Richard knows about her relationship with Andrew, and Arizona debates dating again.

There is plenty of turmoil after Richard messes with the staff pairings. Arizona takes a risk to help a woman who is pregnant with quadruplets.

Meredith takes a step forward with Will but quickly regrets it; Maggie senses a disconnection with Andrew; and Amelia reevaluates her relationship with Owen. Meanwhile, Catherine comes into town and really shakes things up with April and Jackson.

After a missing child forces the hospital into lockdown, Ben decides to operate on a pregnant mother without the proper surgical equipment. Miranda, as Chief, is faced with the repercussions of the event and whether or not Bens impulsive actions were justified.

The doctors work frantically to save a young boy who was accidentally shot. Meanwhile, Arizona is upset when Callie tries to make an important decision about Sofia’s future without consulting her

Callie and Arizona are at odds over Sofia’s future, and Stephanie questions the status of her relationship with Kyle. Meanwhile, Alex and April work on a pregnant teen that is readmitted to Grey Sloan Memorial.

Meredith and Maggie support Amelia on an important day; Jo reveals that she has been keeping secrets from Alex while Arizona and Callie deal with the impact of their custody arrangement. Meanwhile, Ben leaps into action to help a friend.

Meredith considers her loyalties, as Alex deals with the repercussions of his actions. Newlyweds Amelia and Owen host a dinner party with unlikely guests, and Jackson proposes an arrangement to help April through her recovery.

Alex tries to do the right thing but still cant catch a break. Jackson and April adjust to their “new normal” with the baby. While Meredith and Nathan establish what’s going on between them, Amelia questions the state of her relationship with Owen.

A familiar face returns to Grey Sloan, throwing many of the doctors for a loop. With Catherine putting on the pressure, Bailey has to make a decision about Alex while a tough ER case makes Amelia’s bad day even worse.

A difficult surgery brings back pivotal memories for Meredith, Richard, Owen and Stephanie, as they work together to save a life.

Bailey, Arizona and Jo go to a maximum security women’s prison to treat a violent, 16-year-old pregnant girl and her unborn baby.

Maggie gets a surprise visit from her mother at the hospital. Bailey has to make a difficult decision when one of the attendings refuses to work with Eliza, and Stephanie gets caught up in Owen and Amelia’s personal drama.

Alex returns to the hospital and discovers a lot has changed since he left. Meanwhile, Jo has to make a difficult decision on a case, and Arizona tries to distance herself from Eliza.

Jackson and April travel to Montana in order to perform a complicated surgery on a young patient, but Jackson’s mind is elsewhere, and April is forced to step up and get him back on track.

When Maggie’s mom’s health deteriorates, the doctors are at odds over how to treat her. Meanwhile, Richard comes to grips with Bailey’s betrayal over the Residency Program.

Meredith and Nathan have to confront their feelings when they are are stuck sitting next to each other on a plane.

April and Andrew consult with a fiery patient who has a giant, inoperable heart tumor. Meanwhile, Alex and Eliza are at odds over the treatment of a young patient, and Stephanie and Ben make decisions that could affect their careers.

The doctors’ lives are at risk after a dangerous patient escapes the hospital room. Alex must make a hard choice in his relationship with Jo while Meredith has some big news for Nathan that brings things to a turning point.

Meredith struggles to come up with a new plan for Owen’s sister. Jo makes a surprising choice regarding Alex, and Andrew’s sister’s controversial research leads to a shocking discovery.

Amelia confronts a difficult situation, while Meredith deals with the fallout from her conversation with Nathan. Maggie finds herself at an awkward family dinner, Jackson receives big news, and Richard and Bailey search for the stars of tomorrow.

Jackson decides he needs some time off and invites the guys to join him on a day out at sea. Meanwhile, Arizona, April and Maggie treat a woman who’s hiding a deadly secret.

A hacker compromises the hospital’s computer system, causing monitors, phones, labs and patient files to all go down. As technology fails them, Bailey attempts to keep the peace but chaos erupts and the doctors are forced to get creative in their methods to treat the patients.

A young boy is admitted to Grey Sloan Memorial and his case has a profound impact on the doctors. Meanwhile, April is faced with a surprising patient, and Jo continues to deal with her estranged husband.

April is in charge of the new Grey Sloan Surgical Innovation Contest, and the doctors are eager to start their projects. Meanwhile, Catherine’s old friend has a shocking idea for Catherine and Jackson; and Meredith treats a returning patient who inspires her project.

Maggies relationship with Clive starts to progress; she invites him over for a game night to meet Meredith and Amelia; Meredith and Jo meet with the owner of the patent to the polymer they need for their project, who is a friend of the family.

Maggie and Jackson are enjoying spending time together, but he must turn his concentration toward the groundbreaking vaginoplasty surgery he has scheduled with Catherine and Richard. Meanwhile, Meredith and Jo hit a roadblock with their contest submission, so Jo helps Bailey with an incoming trauma patient who used to be an astronaut

Amelia, Koracick and DeLuca perform a risky, groundbreaking procedure using ultrasound waves to remove a young patient’s brain tumor. Meanwhile, Meredith and Jo work with different polymers to try to salvage their project submission; and Richard’s AA sponsor is admitted to Grey Sloan with a DNR.

During presentations on Grey Sloan Surgical Innovation Prototypes Day, Arizona shares cookies from an appreciative patient that, unbeknownst to her, contain a special ingredient. Meanwhile, Catherine reveals shocking details to Jackson about his grandfathers past; and Jo steps in mid-operation on a major surgery.

Alex and Jo go on a road trip to Iowa to find Alex’s mom, whom he hasn’t heard from in a very long time. Meanwhile, Meredith gives a presentation on her mini-livers project, which attracts a ton of attention; and Jackson works to rebuild the foundation after its reputation is threatened.

Meredith Grey and the team of doctors at Grey Sloan Memorial are faced with life-or-death decisions on a daily basis. They seek comfort from one another, and, at times, more than just friendship. Together they discover that neither medicine nor relationships can be defined in black and white.

New doctors continue to shake up the hospital in typical Grey Sloan manner. Meredith bonds with a patient while Jackson struggles with the meaning behind recent experiences; and after making a life-changing decision, Jo forms an unexpected alliance.

Meredith turns heads when she shows up to work done up and ready for her blind date later that day, while Alex makes a questionable decision in order to save a patient. Meanwhile, the burden of knowing Teddy’s secret keeps Maggie up at night, ultimately making her decide she has to tell someone.

Meredith has a patient whose family is celebrating Day of the Dead, making the doctors remember loved ones they have lost. Richard shares unexpected news with Meredith about her father, Thatcher. Meanwhile, Teddy tries to tell Owen that she is pregnant but they get sidetracked, and Jo encourages Link to pursue one of the doctors.

Seattle is hit by a huge wind storm and Grey Sloan becomes inundated with patients. Alex and Jo are stuck at home and decide to make the best of it by having a second honeymoon, while Meredith confronts Richard about getting his life back on track. The winter finale.

Meredith questions Link’s laid-back approach over a patient’s treatment. Maggie worries that Richard, Jackson and Catherine haven’t come to terms with Catherine’s diagnosis. Meanwhile, Deluca steps up in the O.R. when Owen faces a setback.

A patient gives Meredith some clarity on her dating situation around the holidays. The strain on Bailey and Ben’s marriage comes to a head. Meanwhile, Betty drops a bomb on Owen and Amelia.

Meredith breaks a hospital record; the doctors are sent scrambling in the wake of a massive overdose within the community; Jackson wants to take Maggie camping; Levi and Nicos relationship continues to develop.

Meredith finds herself having to side with either Alex or DeLuca during a difficult situation, but she doesn’t want to betray either of them. Meanwhile, Maggie reveals details about her personal life that cause a public stir, and Levi struggles with whether or not to tell his family about Nico.

Maggie introduces mood rooms as an alternative approach to medicine. Alex and DeLuca butt heads over an 11-year-old patient who tries to sabotage her own surgery. Jackson and Richard deal with a gender non-binary patient. Meanwhile, Teddy has a pregnancy scare that brings Owen and Koracick to odds.

Owen and Teddy have to deal with the surprise arrival of Megan Hunt, who knows nothing about their situation. Catherine preps for her first surgery back on a war veteran who’s not emotionally prepared for his procedure. Meredith worries about DeLuca operating alone with Richard.

Meredith debates how to handle an unexpected situation in her personal life, while Richard has an untimely reunion with an old friend. Jo has a hard time at work, and Owen tries therapy.

Alex tries desperately to save his patient Gus while he waits for a severely agoraphobic blood donor to arrive from London. Jo reveals to Meredith why she’s been so down, while Catherine and Bailey hold a meeting to get down to the bottom of an insurance issue. Meanwhile, Maggie and Jackson go camping.

Meredith, Richard and Alex must deal with the consequences after Bailey fires them from Grey Sloan for insurance fraud. After disappearing in the fog, Jackson helps a man in a dangerous situation, as his relationship with Maggie comes to a new crossroad. Meanwhile, Tom gets new responsibilities at the hospital that throw the doctors for a loop.

A patient at the hospital is brain dead after falling into a construction site, and her two sisters must decide whether or not to keep her alive.

Meredith has a court hearing after skipping out on community service, while Bailey and Jo have a patient that Jo realizes is from the treatment facility. Richard and Gemma grab breakfast together and things go awry.

Catherine is back in town and has no idea what’s been going on between Jackson and Maggie, while her relationship with Richard has become distant. Owen and Amelia treat a woman who fell in the basement and quickly realize that there is more to the story, and Maggie is shocked to learn about some of Richard’s relatives who are seeking help.

Jo becomes a safe haven volunteer and gets a call that a baby has been dropped off at Station 19. Meanwhile, Meredith moves forward with her life after facing the medical board. Jackson takes a big step in his budding romance with Vic, while Bailey and Amelia swap pregnancy updates.

Richard finds out Maggie quit Grey Sloan and is concerned about how she’s handling the death of her patient who was her estranged cousin. Bailey returns to work after taking some personal time off, although Koracick doesn’t make her first day as easy as she’d like. Meanwhile, Meredith thinks she might miss DeLuca, and Amelia has an update for Link on her pregnancy.

DeLuca can’t figure out what’s going on with his incurable patient Suzanne and he turns to a diagnostics genius, Dr. Riley from UCSF, for help. Bailey checks in on Joey, a foster kid that Ben brought into Grey Sloan. Meanwhile, Amelia is getting the results of her paternity test and Jo confronts her about how she is treating Link.

Meredith and Carina question DeLuca’s uncharacteristic behavior when he volunteers to perform a life-threatening task during a blizzard. Meanwhile, Bailey tries to help Joey with his future, while Richard trains a new intern at the hospital.

A wealthy inventor arrives at Grey Sloan and asks Koracick for help, while Meredith struggles to save a woman with diabetes who has been rationing her insulin. Jo and Link fight to save a young man who fell onto train tracks, and Jackson and Vics relationship hits a snag.

Richard preps to present his PATH pen at the LA Surgical Innovation Conference but becomes distracted by his issues with Catherine. Maggie and Teddy run into people from their past at the same conference, while Hayes relives moments from when he met his late wife.

Link tries to convince Amelia to take it easy during the final stage of her pregnancy. Hayes asks Meredith a surprising question, and Owen makes a shocking discovery.

Bailey finds herself in the middle of an argument with patients families as they await news about their children who were injured in a fire; Winston surprises Maggie; Amelia and Link try to have some fun as new parents.

Owen faces a medical diagnosis that challenges more than he imagined. Meanwhile, Koracick begins to go stir crazy; and Maggie gets a not-so-subtle glimpse into Winstons background.

Grey Sloan Memorial faces new pressures as Seattle Pres is overloaded, and Grey Sloan Memorial is now on surge capacity protocol. Meanwhile, Owen and Amelia are faced with one of the most controversial surgeries of their careers.

As traumas and pressure mount, Grey Sloan doctors try to find a path forward, and Richard questions his faith. Meanwhile, Maggie gives Winston hospital privileges and they work together to treat an uneasy patient. Jo, Link and Jackson play an unconventional drinking game.

The hospital ventilator shortage has the doctors gravely concerned when both a mother and daughter are in critical condition with COVID and fighting over the last ventilator. Meanwhile, Hayes’ high-risk sister-in-law with multiple sclerosis ends up in the hospital with a kidney stone, and the sister house has a few more kids join it as Amelia plays babysitter for the day.

Maggie is preoccupied with Winston while trying to treat a patient wounded in the Seattle protests. Meanwhile, Levi is tested by an emergency, and the doctors struggle to treat a patient who doesnt believe in COVID.

Jackson pays a visit to his father that helps set him on the right path.

Levi gets accepted into the vaccine trial. Meanwhile, Amelia and Owen treat a car crash patient, and Hayes and Jo are met with Luna’s legal guardian.

As the city of Seattle revels at the Phoenix Fair celebrating the city’s rebirth post-COVID, the Grey Sloan doctors treat a patient who encounters illegal fireworks. Meanwhile, Bailey has her sights set on hiring new doctors, but she’s having trouble finding viable options. Owen and Teddy attempt to take the next step in their engagement, and Meredith has a surprising opportunity when she meets a dynamic doctor from her mother‘s past. The crossover starts on Station 19 S05E01 Phoenix from the Flame (I).

Seattle’s favorite redhead returns and graces the Grey Sloan halls with her experience and expertise as she attempts to help Richard teach the newest crop of residents. Meanwhile, Meredith has a decision to make, and Link confides in Teddy.

The Grey Sloan doctors spring into action after an explosion rocks Seattle, with the incoming trauma hitting close to home. Owen experiences PTSD after he hears the explosion, while his sister Megan enlists help from Winston and Hayes in confidence. In Minnesota, Meredith and Amelia meet up with a familiar face who assists in their study. The crossover starts on Station 19 S05E05 Things We Lost in the Fire (I).

Dr. Hamilton takes his frustrations out on Meredith, so Nick gives her a chance to blow off steam by scrubbing in on a surgery. Back in Seattle, Link and Jo take their kids to a fairytale theater performance that goes wrong. Bailey and Dr. Lin attend a recruitment fair in hopes of attracting more doctors to Grey Sloan but find themselves ill-prepared.

The Grey Sloan Memorial doctors grapple with the aftermath of the car crash that involved some of their own; Meredith works to save Dr. Hamiltons life. Levi is impacted from his latest loss.

While Meredith, Amelia and the team prepare for Dr. Hamilton’s long-awaited, groundbreaking surgery, Bailey receives an unexpected offer. Owen’s impatience makes him a difficult physical therapy patient, forcing Link to intervene. In Minnesota, Nick makes a liver transplant a teaching moment.

While Richard ponders his surgical abilities, Jo is charmed by her patient’s brother. Elsewhere, Megan makes sure Teddy and Owen talk out their differences, and a pet python causes an uproar.

Bailey is on edge when an accreditation council stops by Grey Sloan to review the residency program, while Richard sets an assessment of his own for the same day. Meanwhile, Nick returns to Seattle to perform a first-of-its-kind operation with Meredith.

A former patient of Link’s, Simon, is in the ER with his pregnant wife; and Bailey receives an offer from Nick.

Due to a blood shortage, Grey Sloan Memorial is setting up a voluntary donation center. Meanwhile, Nick asks Meredith for help with his patient and Winston is hung up on his relationship with his brother.

After a long six months, Grey Sloan Memorial has reinstated its residency program. A group of talented and striving young interns has been recruited as the attending surgeons work to rebuild the program to its former glory. Meredith, still functioning as the interim chief, sees Nick for the first time since she rejected his offer to move to Minnesota. Meanwhile, Bailey tells Richard she is not ready to return to work; Levi works up the courage to break disappointing news to Jo, and things turn awkward when Link realizes he has met one of the interns already. With Amelia and Maggie’s help, the new doctors are thrown into their first day on the job dealing with injuries from a recent tornado.

Bailey recruits the interns to create a series of social media videos informing teens about sexual health. The videos, filmed at Grey Sloan in front of a group of high schoolers, hit home as a student has medical complications during her visit. Elsewhere, Meredith and Maggie learn something new about Zola.

Bailey and Addison take a road trip to volunteer at a family planning center, but a patient’s ectopic pregnancy leads to complications. Elsewhere, the interns play detective about Lucas’ relationship with Amelia, and Meredith catches up with Jackson on a trip to Boston.

It’s Meredith’s last day at Grey Sloan Memorial and the doctors plan a goodbye surprise, while Nick confronts her about the future of their relationship. Elsewhere, the interns compete to scrub in on Maggie and Winston’s groundbreaking partial heart transplant procedure, and Richard asks Teddy an important question.

Simone is met with a life-changing decision upon the return of someone from her past. Blue shadows Maggie on a risky procedure, while Jo and Link tend to a pregnant woman. At the intern house, Lucas and Mika throw a party filled with surprises.

Addison makes a special appearance at Grey Sloan to welcome Bailey’s new OB/GYN trainees. Maggie’s lung transplant is derailed, and Nick bonds with Lucas — before the day takes a shocking turn.

A bull rider shows up at Grey Sloan with severe injuries, forcing Maggie, Amelia, Owen and Blue to examine their own biases. Elsewhere, Simone can’t find anyone to be her maid of honor, and Mika takes drastic measures to pay down her student debt.

With Levi’s help, a patient celebrates a milestone. Jo processes a difficult diagnosis, and Maggie and Winston decide their future.

Teddy calls an emergency meeting to discuss the intern program. Link wrestles with his own self-doubt as he preps for a massive surgery, and Nick shares some much-needed guidance with a struggling Lucas.

Simones wedding day arrives as Jo and Links relationship hits a major turning point.

Meredith rethinks her plans. The interns are on thin ice following a patients death. Simone and Lucas are immediately tested in an emergency. Richard confides in Bailey. Teddys fate is revealed.

Meredith and Amelia work to secure funds for their research while Amelia finds herself at odds with a new attending. Levi runs into someone from his past, and Owen gives Winston advice. Lucas ditches Mika, forcing her to treat a patient alone.

Its all hands on deck at Grey Sloan when a group of medical students is injured by a floor collapsing at their white coat party. Jo and Link are forced to talk about the future, while Jules confronts Winston about his attitude.

An unexpectedly complex case brings back painful memories for Simone. Jules and Blue make a high-stakes bet on who can finish their procedure log first. Richard suspects Winston is avoiding him.

Just as Amelia comes to a realization, Teddy encourages her and Meredith to speed up their Alzheimers research over fear of Catherine finding out. Mika finds herself caught in the middle of Link and Jo; meanwhile, Lucas receives bad news.

After firing some of Grey Sloans best, Catherine continues to interfere with Meredith and Amelias research. Accidents at a climate change protest bring unique cases to the hospital, and Bailey encounters a blast from the past.

Simone and Lucas work to balance their relationship while competing to assist on an awake kidney transplant. Teddy offers Amelia a new opportunity, and Bens interview doesnt go as planned. Merediths secret causes tension with Richard.

During a high-stress day at Grey Sloan Memorial, the fates of a patient in critical condition and a helicopter-bound medical team hang in the balance. Teddy and Owen work on their marriage, while Bailey, Blue and Link treat a hospital employee.

The doctors at Grey Sloan must put aside their emotions under intense circumstances. Levi asks James a shocking question that could impact their future.

The aftermath of the convenience store shooting brings chaos to Grey Sloan. Ben hits a wall with his new emergency preparedness plan. Romantic tensions surface for Owen, while Amelia and Winston disagree over the surgical plan for a young patient.

Following a difficult case, the team faces the complexities of medical ethics. Meanwhile, Bailey continues to navigate her working relationship with Ben, while a group of college students on a scavenger hunt causes chaos around the hospital.

Amelia and Simone attempt to perform a high-stakes and groundbreaking brain surgery. Teddy and Bailey attend a medical conference and run into Dr. Cass Beckman. Meanwhile, Jo struggles with her irritation toward a younger OB-GYN.

A window washer’s platform crashes through a hospital window, testing the Grey Sloan team’s limits. Meanwhile, Blue and Simone clash over their living arrangements, and Lucas strives to impress Catherine while on her service.

Jo and Links wedding day arrives, along with some visitors. Meanwhile, Teddy and Owen are met with a familiar face seeking treatment, and Lucas disagrees with Simone on how to approach a patients worsened condition.