Ko Chun, a renowned gambler, loses his memory in an accident and starts behaving like a child. Little Knife, an amateur gambler, offers him shelter and realizes that he has a penchant for gambling.
The Hong Kong super-cop must stop a group of blackmailing bombers at the same time that the villains of the first Police Story are out for revenge.
A country boy becomes the head of a gang through the purchase of some lucky roses from an old lady. He and a singer at the gang's nightclub try to do a good deed for the old lady when her daughter comes to visit.