Set in the 1980s, a husband and wife, both detectives, infiltrate a massive criminal organization responsible for the illegal drug trade between Korea, China, and Japan.
Episodes
Episode 1
Detective Jun-mo goes undercover within Gangnam Union to probe an international drug trade.
Episode 2
Barely passing Gi-cheul's test, Jun-mo joins Gangnam Union and discovers an unexpected truth.
Episode 3
Eui-jeong's appearance puts the squad in trouble. Gi-cheul finds last night's attack suspicious.
Episode 4
The team seeks Eui-jeong's aid to assist Jun-mo in a crisis, which leads to a perilous love triangle.
Episode 5
Earning Gi-cheul's trust, Jun-mo becomes anxious as he sees Gi-cheul making a move towards Eui-jeong.
Episode 6
The delivery accident jeopardizes the trade. Detective Hwang closely surveils Gangnam Union.
Episode 7
Hae-ryun shows interest in Jun-mo and Eui-jeong approaches Gi-cheul. Jun-mo takes an extreme measure.
Episode 8
Gi-cheul suspects Jun-mo. The four people's irreversible decisions trigger the biggest crisis.
Episode 9
The battle with Jae-geon creates a crack. Jun-mo joins forces with Hae-ryun to resume the trade.
Episode 10
Jun-mo and Eui-jeong juggle duty and feelings. Hwang continues to meddle, and the final day arrives.
Episode 11
An accident halts the trade and a crisis approaches as Eui-jeong and Do-hyung worry about Jun-mo.
Episode 12
Gi-cheul and Jun-mo make their way to the final deal. Korea, China, and Japan prepare for the arrest.
Top Cast
Ji Chang-wook
Park Jun-mo
Wi Ha-jun
Jung Gi-cheol
Lim Se-mi
Yoo Eui-jeong
BIBI
Lee Hae-ryeon
Im Sung-jae
Choi Jeong-bae
Cha Rae-hyung
Hong Hee-seong
Lee Shin-ki
Seo Jong-ryeol
Jeong Jae-kwang
Kwon Tae-ho
Bae Myeong-jin
Bae Yong-dae
Ji Seung-hyun
Seok Do-hyung
