By a wierd coincidence, dutiful Hong Kong policeman Dan saves the lifetime of the chief of a violent gang of armed robbers. After they commit one other crime, Dan is decided to place an finish to their actions. He works with the chief, whom the gang had betrayed, to engineer a plan to wreak havoc inside the gang and let the gangsters kill each other. However it turns into more and more apparent to Dan and to his colleagues that Dan is affected by a extreme psychological dysfunction, and Dan finds that as a substitute of upholding the regulation as a righteous police officer, he has now turn out to be a fugitive needed for homicide.
