Infernal Affairs

Infernal Affairs (無間道)

Year : 2002

Director : Andrew Lau Alan Mak

Cast
Andy Lau as Senior Inspector Lau Kin-ming (劉健明)
Edison Chen as young Lau Kin-ming (年青版)
Tony Leung as Chan Wing-yan (陳永仁)
Shawn Yue as young Chan Wing-yan(年青版)
Eric Tsang as Hon Sam (韓琛)
Anthony Wong as Superintendent Wong Chi-shing (黃志誠)

Plot
Chan Wing-yan,( Shawn Yue) a police officer, goes undercover into a triad; only his direct superior, Superintendent Wong(Anthony Wong), is aware of his mission and true identity. Around the same time, Lau Kin-ming(Edison Chen ) a triad member, infiltrates the Hong Kong Police Force on the orders of a powerful gang boss, Hon Sam(Eric Tsang ).
Over the course of ten years, Chan(Tony Leung)experiences great stress from his undercover work while Lau(Andy Lau) quickly rises through the ranks in the police department.
Using Morse code, Chan is able to relay data back to the police. However, Lau alerts Hon, giving him enough time to order his minions to dispose of the evidence. After the incident, both Wong and Hon are tasked with finding the moles in their respective organization.
Wong intends to pull Chan out of undercover work for fear of his safety. However, Wong is caught by Hon’s men and is killed when he is thrown off the building, having refused to reveal Chan despite a beating from the gangsters.
Through this incident, Lau retrieves Wong’s cell phone and contacts Chan; both of them agree to foil a drug deal by Hon. The plan succeeds and many of Hon’s men are arrested, while Lau betrays Hon and murders him. Everything seems to have returned to normal. However, back at police headquarters, Chan discovers that Lau was the mole and leaves immediately.
Chan and Lau meet on the same rooftop where Wong was killed earlier. Chan disarms Lau, and Lau pleas for forgiveness and request to remain a cop. Chan refused and killed by other inspector, who is also a mole. But Lau kill the inspector and shows his identity card to the police to identify himself as one of them.