The Worst of Evil

Detective Junmo goes undercover within Gangnam Union to probe an international drug trade.

Barely passing Gicheul's test, Junmo joins Gangnam Union and discovers an unexpected truth.

Euijeong's appearance puts the squad in trouble; Gicheul finds last night's attack suspicious.

The team seeks Euijeong's aid to assist Junmo in a crisis, which leads to a perilous love triangle.

Earning Gicheul's trust, Junmo becomes anxious as he sees Gicheul making a move towards Euijeong.

The delivery accident jeopardises the trade; Detective Hwang closely surveils Gangnam Union.