Jang Choon-dong is a traffic officer who aspires to become a homicide detective. He is assigned to go undercover to infiltrate a gangster network. Meanwhile, Lee Joong-dae, a member of Kwang-seob's gang, goes undercover himself by joining the police force. Joong-dae tries hard to gain favor with his squad leader in an effort to expose Choon-dong's identity.
Jeong Jun-ho
Jung Woong-in
Jung Woon-taek
Han Go-eun
Kim Sang-joong
Sunwoo Jae-duk
Jeon Mi-seon
Park Sang-min
Yoon Hae-young
Yoo Da-eun
Kyeong-hoon Jeong
Kim Dong-seok