Robert Ko (Kao Fei) returns home from America and meets Tiger (John Chang), a vagrant. The two become friends and Tiger becomes involved with a girl (Yang Pan Pan) from a family of fighters. The girl has aroused the interest of the local boss (Tiger Yang) and is kidnapped. The Two Wondrous Tigers must now come to her aide.

He's lost his memory, but not his skill: After a fierce battle with a local tong, Hoi is thrown over an embankment and left for dead. He survives the ordeal but has lost all of his memory, but not his kung-fu. His fateful meeting with a beggar leads to their teaming up for cleaning up that tong.

A martial arts whiz and his ambitious friend open a kung fu school, but only draw the attention of an angry student from the town’s only other school. A confrontation leads to a fight in a brothel that causes both schools to become targets of the brothel owner’s wrath.

Pai 'The Rat' always gets into trouble with Chan 'The Cat'. They always try to outsmart each other even when it threatens the lives of other people.