Chan Wing Yan, a young police officer, has been sent undercover as a mole in the local mafia. Lau Kin Ming, a young mafia member, infiltrates the police force. Years later, their older counterparts, Chen Wing Yan and Inspector Lau Kin Ming, respectively, race against time to expose the mole within their midst.

Starring:

Andy Lau, Anthony Wong Chau-Sang, Au Hin Wai, Chapman To, Chi Keung Wan, Courtney Wu, Dion Lam, Edison Chen, Eric Tsang, Ka Tung Lam, Kelly Chen, Sammi Cheng, Shawn Yue, Ting Yip Ng, Tony Ho, Tony Leung Chiu Wai

Genre:

Crime, Drama, Romance, Thriller