Elder brother, Big Cat is a flirt and younger brother, Small Cat is mean and cold. They were sent to prison for commiting crimes. Uncle Tse, a dominant criminal, accepted Small Cat in admiration of his tuff character. Inspector Tai, who caught them in jail is a responsible, efficient an dhard crime destructor. Soon as the brothers were out from jail, they ran into Tai in doing a case. Small Cat who was very anxious to take revenge on Tai...