Wong Fei-Hung (Jackie Chan) stars as the mischievous young son of a martial arts school master and is constantly clowning around when he should be learning kung fu. After his comic antics injure the son of a powerful local man, his father enlists the help of his sadistic uncle to teach his son a little self-discipline. This strange man, who has a reputation for crippling his students, tries to teach Fei-Hung a bizarre style of kung fu.  After much suffering the son comes back to rescue the father from an assassin.