Captain Lau Si Chung (Chi Kuan Chun), realizes his kung fu isn't that good when he gets beaten by a weird old man (Cheng Kei Ying). He goes off to a temple to learn from the old man. Once he becomes proficient, the old man tells him that his master was killed by a Bandit known as "The Red Dart." Lau Si Chung then seeks vengeance & a book on nerve-lock reverses that was also stolen by The Red Dart.

A policeman escorting a murderer to jail must contend with the criminal's accomplices, including a shadowy figure with an iron claw for a hand.

After the Mantis Fist school attacks the Eagle's Claw school and leaves their teacher for dead, the dying master passes over his senior student, Chen Tien Chun, to anoint his second most senior pupil, Lee Cheh, as new master. Dejected, Chen joins the Mantis Fist school and wins the affection of his new master's daughter, while his former schoolmates plot revenge.

Historical movie set during the Japanese occupation of China during WWII. Jackie Chan is one of the good guys but has nothing much more than a supporting role.