After being beaten by some thugs, police officer Chin Tai Ba (Leung Kar Yan) learns the Sleeping Fist style from martial arts master Chung Yiu (Yuen Siu Tin). After mastering his training, Chin sets out with his teacher and Cub (Wong Yat Lung) to get his revenge. But the bad guys have a secret weapon of their own, Eagle Claw master Kao (Kao Hsiung).