Police inspector and excellent hostage negotiator Ho Sheung-Sang finds himself in over his head when he is pulled into a 72 hour game by a cancer suffering criminal out for vengeance on Hong Kong's organized crime syndicates.

A husband is on trial for the attempted murder of his wife, in what is seemingly an open/shut case for the ambitious district attorney trying to put him away. However, there are surprises for both around every corner, and, as a suspenseful game of cat-and-mouse is played out, each must manipulate and outwit the other.

Officer Chan Ka Kui manages to put a major Hong Kong drug dealer behind the bars practically alone, after a shooting and an impressive chase inside a slum. Now, he must protect the boss' secretary, Selina, who will testify against the gangster in court.

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.

Inspector Rizzo is accused of drug trafficking. In order to clear his name he has to find out who is the person, from a Mafia ring, who has infiltrated his police department.