Chau and Beethoven, two Hong Kong police detectives, go through misadventures to protect a young girl from a ruthless crime lord, as she possesses a ledger that contains all of the gangster's activities. In the mix is a tough, no-nonsense policewoman, who falls for one of the detectives. Written by Oliver Chu

Hsia and Lei Kung are two bumbling cops assigned to protect the gorgeous Rosa, girlfriend to a missing informer named Lee. But Rosa's wanted by more than just the law — the bad guys want her for leverage, and Lei Kung just wants her to be his girlfriend! Meanwhile, Hsia attempts to romance Lei Kung's sister, and the bad guys prepare for a final blow-out fight sequence!

Two blood brothers, who have grown up on the streets of Macau, are bound together by a special code of honour. However, this bond ultimately leads them into brutal conflict when they struggle to leave the violent world they live in.