A Hong Kong policeman (Simon Yam) seeks honesty and loyalty amid corruption, crime and violence.

Lau Lee Hung, the leader of "Drug gang" was a prison guard at the men's jail, but was fired by his supervisor because of some illegal misconduct. He successfully robbed Rainbow's $800,000 savings. Thereafter, an innocent student was drugged and raped and kept for ransom. Police officer got serious about the crimes drug gang is committing and sends for investigation. Rainbow and her husband are going to help the police to catch Lau......