In the 1990s, a police officer goes undercover to infiltrate a mega crime syndicate that distributes illegal drugs across South Korea, China and Japan. His wife, a narcotics officer, is also involved.
Episode List
S1 • E1
Episode #1.1
Detective Joon-mo goes undercover within Gangnam Union to probe an international drug trade.
S1 • E2
Episode #1.2
Barely passing Ki-cheol's test, Joon-mo joins Gangnam Union and discovers an unexpected truth.
S1 • E3
Episode #1.3
Eui-jung's appearance puts the squad in trouble. Ki-cheol finds last night's attack suspicious.
S1 • E4
Episode #1.4
The team seeks Eui-jung's aid to assist Joon-Mo in a crisis, which leads to a perilous love triangle.
S1 • E5
Episode #1.5
Earning Gi Cheul's trust, Jun Mo becomes anxious as he sees Gi Cheul making a move towards Eui Jeong.
S1 • E6
Episode #1.6
The delivery accident has put the trade on risk, While Detective Hwang closely monitors the Gangnam union.
S1 • E7
Episode #1.7
Hae-Ryeon shows interest in Joon-mo; Eli-Jung approaches Ki-cheol; Joon-mo takes an extreme measure.
S1 • E8
Episode #1.8
Ki-check suspects Joon-mo. The four people's irreversible decisions trigger the biggest crisis.
S1 • E9
Episode #1.9
The battle with Jaegeon creates a crack. Joon-mo joins forces with Hae-ryeon to resume the trade.
S1 • E10
Episode #1.10
Joon-mo and Eli-Jung juggle duty and feelings. Hwang continues to meddle, and the final day arrives.
S1 • E11
Episode #1.11
An accident halts the trade and a crisis approaches as Eui-jung and Dohyung worry about Joon-mo.
S1 • E12
Episode #1.12
Ki-cheol and Joon-mo make their way to the final deal. Korea, China, and Japan prepare for the arrest.
