After a brutal murder occurs, organized crime investigators Kwan, Lee and Ling start to investigate the case. They soon are exhausted in their search and produce no legitimate leads. Kwan is cool on the outside, but warm on the inside. Lee has a sense of humor and delights many girls. Both men fall in love with the Ling (Cheung), known for being open and also for wearing sexy clothes. Ling likes them as well, which is a problem, since she can court only one. Ling gives both men a fair competition, and eventually chooses Lee. On their wedding night, the murderer comes to Lee and Siu-ling. Lee is killed while Siu-ling is raped. Siu-ling decides to trap the murder, using her body as a weapon.