Plainclothes policeman Kam Tai-fat discovers the crimes committed by Cho Tin-pa and plans to report it to the capitol. When Cho discovers this, he sends a group of thugs to hunt Kam down. One day, Kam was severely beaten by Kam's thug and there, he meets Kid, a street urchin who rescues him is and takes him to his master, Old Fox, who teaches Kam and Kid the martial arts style of Sleeping Fist.
