Li-chuen Chou

When a gang war breaks out over disputed territory, crime boss Wai blames his lieutenant, Ah Sing, for failing to wipe out the competition.

Vice Squad 633 sends crack narcotic fighters Wong and Miss Chow to the slums to flush out the traffickers. They catch Spareribs, a minibus driver who has become an addict because he foolishly believed in a quack doctor. Wong and Chow decide to give Spareribs another chance and he offers to be an informer. The Wong-Chow team makes a number of arrests, thanks to Spareribs. Lam Kee, the drug ring's boss, fails in buying Wong over. He decides on a diabolic plan to get rid of Wong...

Two traveling conmen, mistaken for fighters, must protect a village from gangsters.