Following Tung's death in a mysterious plane crash, a police investigator replaces him to investigate the shady dealings of a gang of criminals led by Feng Wei, cousin of the dead. Feng's faults soon come to light. He wants to trick cousin Ivy, Tung's sister, the only beneficiary of a significant fortune. To achieve his purpose, Feng does not hesitate to kill Tung's butler, housekeeper and girlfriend. After realizing that Ivy is unaware of where the key to the safe in which the inheritance documents were kept is hidden, Feng tries to escape by taking her cousin hostage, but will be captured by the investigator and imprisoned with all of his band, while Ivy will be able to live peacefully near her savior.

Arguably the funniest of the four famous Hui brothers, Michael has a tour-de-force vehicle in this naughty little comedy playing four different characters, each one in a compromising situation. And the laughs do come big and hearty as Hui bounces his cheeky humour off a terrific large supporting cast including the sophisticated Hu-chin and the lovely Pai Hsiao-man. Keeping the Benny Hill-style hi-jinks afloat is stalwart Shaw director Li han-hsiang who manages to switch flawlessly between these cheeky flings and his period epics.