Prequel to the Hong Kong gangster thriller 'Infernal Affairs' (2002), set ten years before the events of the original film. Chen Ying Yan (Shawn Yue) has just become an undercover cop in the triads, while Lau Kin Ming (Edison Chen) is a new recruit to the police force. Bitter enemies from the first film, Inspector Wong (Anthony Wong Chau-Sang) and Sam (Eric Tsang) are behaving like old friends, while Yan is embroiled in the family saga of a triad cartel, and Ming has developed an oedipal fixation on his boss's wife. As friendships fracture and foes join forces, nothing is as it first appears to be...

Wai Keung (Andrew) Lau directs this martial arts action drama set in Japanese-occupied 1920s Shanghai. Seven years after the apparent death of Chen Zhen (portrayed by Bruce Lee in the 1972 film 'Fist of Fury' and played here by Donnie Yen), the avenging hero returns. When he is not courting sultry nightclub singer Kiki (Qi Shu), Zhen takes it upon himself to stop the wave of assassinations sweeping Shanghai, donning a black mask to infiltrate the mob and track down the Japanese hitmen who have been killing off those named in their top-secret Death List.

Wai Keung (Andrew) Lau directs this martial arts action drama set in Japanese-occupied 1920s Shanghai. Seven years after the apparent death of Chen Zhen (portrayed by Bruce Lee in the 1972 film 'Fist of Fury' and played here by Donnie Yen), the avenging hero returns. When he is not courting sultry nightclub singer Kiki (Qi Shu), Zhen takes it upon himself to stop the wave of assassinations sweeping Shanghai, donning a black mask to infiltrate the mob and track down the Japanese hitmen who have been killing off those named in their top-secret Death List.