City of Damnation
City of Damnation is a 2009 South Korean film directed by Kim Dong-won and is a remake of the 2002 Hong Kong film Infernal Affairs.
Jang Choon-dong is a traffic officer who aspires to become a homicide detective. After being noticed by his superiors, Choon-dong is assigned to go undercover to infiltrate a gangster network headed by Yang Kwang-seob. Meanwhile, Lee Joong-dae (Jung Woong-in), a member of Kwang-seob's gang, goes undercover himself by joining the police force. Joong-dae tries hard to gain favour with his squad leader and bureau director in an effort to expose Choon-dong's identity, but falls in love with a colleague, Cha Se-rin.