Billy Wong is a New York City cop whose partner is gunned down during a robbery. Billy and his new partner, Danny Garoni, are working security at a fashion show when a wealthy man's daughter, Laura Shapiro, is kidnapped. The Federal authorities suspect that Laura's father is involved with Mr. Ko, a Hong Kong drug kingpin, so the NYC police commissioner sends the two cops to Hong Kong to investigate.

Fatty and Baldy, a pair of undercover detectives, infiltrate a Triad drug syndicate but are put on a leave of absence after apprehending the kingpin, Tak, in the middle of the police commander's wedding. They return to find that Tak has been bailed out and has hired a team of assassins to exact revenge.

Lam, a middle-aged cop on the verge of retirement, is asked by his sister to find his nephew, Buffalo, a suitable wife, but Buffalo already has designs on an escort, who becomes the target of a drug smuggling syndicate after she witnesses a murder.