A nightclub girl, MEI's, dead body was found at her own apartment. The police finds an obscene video-cassette tape. Unexpectedly, the male protagonist is Inspector FUNG's husband, LAI. The coroner's report shows that MEI’s rib were chopped, her back was shot an her head was hit by something hard and causes a crush at her head bone. Moreover, she was being poisoned. LAI disappears. The murder weapon got LAI’s finger-print. However, there is also a left-hand finger-print belonged to another people. YUNG finds the mamasan for more information. He then knows that MEI always went out with a drug addict, TSUEN. They even set plot to trick the nightclub customers. Later, MEI was sacked. TSUEN was chopped to death by his debtors. MEI then becomes very rich.
