The First Responders

The first responders try to stop a suicide attempt, but the case turns out to be more complicated.

A driver is arrested after a hit-and-run accident of a child. A shocking truth awaits.

An unidentified body is found at the scene of a fire. An unlikely person is held as a suspect.

Ho-gae reinvestigates a murder case and gets help from Song Seol and Yoon Hong.

The first responders search for the father of the stillborn child. They then meet a strange patient.

A series of fire incidents occur. Do-jin suspects a chain arson and goes to see Ho-gae.

Two fires break out in different locations. The first responders find themselves in a crisis.

The arsonists final plan gets revealed. Can Ho-gae save everyone from danger and catch the criminal?

Do-ha concludes that the death at the villa was an accident, but Ho-gae continues his investigation. Do-ha uncovers the dark side of the neighbours.

Criminals plan to endanger the NFS building. Can the team safeguard the place?

Ho-gae delves into the investigation of Ma Joong-dos murder and reopens a past murder case and prison escape.

Supported by the NFS, the first responders confront the sinister mastermind in a decisive showdown.