A plump butcher student of Wong Fei Hung, Lam Sai-Wing gets into trouble with a rival kung-fu school known as Five Dragons. He is accused of raping the Head of that school's goddaughter and killing his son. Now Ko, the Head of Five Dragons, wants revenge.
Dragon is now transferred to be the police head of Sai Wan district, and has to contend with a gangster kingpin, anti-Manchu revolutionaries, some runaway pirates, Manchu Loyalists and a corrupt police superintendent.
The head of an elite Hong Kong surveillance unit keeps one eye on his rookie apprentice and the other on a notorious criminal he suspects of masterminding a recent jewel heist in this tense thriller from filmmaking duo Johnnie To and Nai-Hoi Yau. Of course, the criminal knows all along he's being watched. But that doesn't stop him from trying to pull off the biggest score of his career.