A movie company secretly films the lives of two conmen.

A plainclothes policeman, Chin Tai Ba, is seriously wounded in a fight with some ruffians but is helped to safety by a young wiseguy, Cub. Here he is taught the art of Sleeping Fist by Cub's master Chung Yiu, and the trio march to the Shang Wei martial arts school to take revenge on the thugs. However, in a last desperate attempt to get even, the gang call on Eagle Claw master Kao to sort out the snoozers.

Ah Chi (Ka-Yan Leung) is obsessed with the martial arts and, more often than not, his kung-fu clowning gets him into trouble. Ending up facing Hsia (Eddie Ko) of the notorious Jade Brotherhood is inevitable. As a result, Hsia forces Chi's martial arts master to expel him. Masterless and working for a fish vendor, Chi meets a crafty kid (Yat Lung Wong), whose uncle Chow Tung (Chin Yuet Sang) is a master of the Insane Mantis style. The Jade Brotherhood aims for control of the small town but Chi is training with a new Master and will not accept bullies in the neighbourhood.