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 … Andy Lau, Tony Leung Chiu-wai, Anthony Wong, Eric Tsang, Kelly Chen, Sammi Cheng, Edison Chen Added on Netflix 2023-11-17. Youtube Trailer