Ji Changwook plays Detective Park Junmo, the main character, a police officer from the countryside who infiltrates he Gangnam Union in the 1990's. He disguises himself as Kwon Seungho to destroy the Korea-China-Japan drug cartel, with the aim of promotion. In order to achieve his own goal, he appears as a person full of guts who shines even more in a crisis, as well as holding an evil temperament that leads
Junmo towards moral ambiguity.
Park Junmo is married to elite police officer Yoo Uijeong, who is also undercover on this case, to break open the drug trade.
As Junmo gets closer to solving the case, Haeryun, a key person in the drug trade appears. Their meeting adds more complex changes to Park Junmo's storyline and the
Im Semi plays Yoo Uijeong, an elite police officer involved in drug crime. She has abilities recognised by everyone and as Park Junmo's wife, gives off a special presence.
Yoo Uijeong learns that the boss of the Gangnam Union which her husband is currently investigating, is Jung Kicheol. She had a special relationship with him in the past, so decides to jump in to solve the case quickly, adding to the tension.
Yoo Uijeong and Park Junmo who share dangerous secrets, and Jung Kicheol, who can't let go of his suspicions, head towards uncontrollable chaos.
Go Youn-jung
IU
Bae Suzy
Go Yoon Jung
Junmo towards moral ambiguity.
Park Junmo is married to elite police officer Yoo Uijeong, who is also undercover on this case, to break open the drug trade.
As Junmo gets closer to solving the case, Haeryun, a key person in the drug trade appears. Their meeting adds more complex changes to Park Junmo's storyline and the
relationships between the four characters
Yoo Uijeong learns that the boss of the Gangnam Union which her husband is currently investigating, is Jung Kicheol. She had a special relationship with him in the past, so decides to jump in to solve the case quickly, adding to the tension.
Yoo Uijeong and Park Junmo who share dangerous secrets, and Jung Kicheol, who can't let go of his suspicions, head towards uncontrollable chaos.