When a tough policewoman learns about a group of violent terrorists, she, along with her partner and a Japanese detective, does everything it takes to take them down.

John Shum leads an expedition to an supposedly deserted island only to find out that it's inhabited by a group of seriously demented characters,lead by Peter Chan Lung.This is a family that stays together,slays together and when the youngest one is refused in marriage to one of the young girls of the troupe they turn into savage maniacs.

Sammo and George Lam are partners in crime and they scam some triad big shot out of a load of money and decide to retire. Three years later they both receive letters from Stanley Fung, in which he informs them that he has proof of all their criminal activity and unless they do exactly what he says–he will turn it over to the cops. Fung is an ex-cop himself and is trying to get the goods on the same triad leader that Sammo and George scammed.