A pair of evil kung-fu artists, Heaven and Earth, are slaughtering the entire Yin-Yang brotherhood.
Chung Yao, a martial arts expert, has long been on the run from his stepbrother, who he caught trying to rape his wife on their wedding night. His brother has never given up the chase however, and Chung Yao live in constant fear that the vengeful stepbrother will murder him and his wife.
A large quantity of gold is stolen from the government, so undercover martial arts constables do there detective work to find out the culprits and the whereabouts of the bullion. Awesome fight scenes, choreographed by Hwang Kwo Chu, with a lot of innovative weapon work.
