Wong Kam-Kwei, a gang boss on the decline, overseeing bathhouses and karaoke bars, falls for a small restaurant owner, Mei. He begins to help her business, and learns that Mei is already in love with Leung, a member of his gang. He’s also like a brother to Kam-Kwei. When a rival gang hoping to steal his territory kills Leung, the only thing left for Kam-Kwei to do now is to protect Mei and avenge Leung.

When the boss of a ruling Hong Kong triad is arrested and executed in China for counterfeiting money, mayhem ensues as the mob's leading contenders circle the throne.

An illegal immigrant from Mainland China sneaks into the corrupt British-colonized Hong Kong in 1963, transforming himself into a ruthless drug lord.