By a strange twist of fate, dutiful Hong Kong policeman Dan saves the life of the leader of a violent gang of armed robbers. When they commit another crime, Dan is determined to put an end to their activities. He works with the leader, whom the gang had betrayed, to engineer a plan to wreak havoc within the gang and let the gangsters kill one another. But it becomes increasingly obvious to Dan and to his colleagues that Dan is suffering from a severe mental disorder, and Dan finds that instead of upholding the law as a righteous police officer, he has now become a fugitive wanted for murder.

Manson Law, a celebrated stockbroker in Hong Kong, is injured in a car accident. The police, led by Inspector Jack Ho, discovers a military surveillance device in the car wreck. Meanwhile, the wiretapper Joe Szema is unveiling his extensive plan that targets the mysterious financial conglomerate, the Landlord Club. The fate of these three men soon intertwines in the cat-and-mouse game that may bring down the entire stock market.