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.
|Tagline:||Loyalty. Honor. Betrayal.|
|Cast:||Andy Lau, Anthony Wong, Berg Ng, Chapman To, Dion Lam, Edison Chen, Eric Tsang, Gordon Lam, Kelly Chen, Sammi Cheng, Shawn Yue, Tony Ho, Tony Leung Chiu-Wai, Wan Chi-Keung, Xiao Yaxuan|
|Director:||Alan Mak, Andrew Lau|
|Language:||广州话 / 廣州話, ภาษาไทย, 普通话|