The Worst of Evil

Detective Jun-mo goes undercover within Gangnam Union to probe an international drug trade.

Eui-jeongs appearance puts the squad in trouble. Gi-cheul finds last nights attack suspicious.

Earning Gi-cheuls trust, Jun-mo becomes anxious as he sees Gi-cheul making a move towards Eui-jeong.

Hae-ryun shows interest in Jun-mo and Eui-jeong approaches Gi-cheul. Jun-mo takes an extreme measure.

The battle with Jae-geon creates a crack. Jun-mo joins forces with Hae-ryun to resume the trade.

An accident halts the trade and a crisis approaches as Eui-jeong and Do-hyung worry about Jun-mo.