Lung is a talented fighter but prefers to spend his time loafing around and picking fights, despite orders from his grandfather not to fight. Unknown to him, a brutal general has been slaughtering all the people from his grandfather’s clan. When the general recognizes Lung’s style of kung fu during one of his street fights, he hunts down Lung’s grandfather and kills him.
A brother and sister escape from Japanese-occupied Shanghai to Japanese-occupied Taiwan, to stay with their grandfather who runs a Kung-Fu school there. However, the master of a Japanese Kung- Fu school in Taiwan has plans to bringing all other schools on the island under his domination, and part of his plan involves the murder of the grandfather.
Wandering endlessly between pure incoherence and a tragedy rife with dramatic possibilities, Lau Kwok-Hung sets up the murder mystery of a, low and behold, killer who strikes during rainy nights.
