Scientists install a micro chip, called Black Cat, inside the brain of a violence prone girl named Catherine in an attempt to refine and control her fits of rage. Their plan is to turn her into the perfect government secret agent "killing machine".

A Hong Kong police detective investigating weapons smuggling through the airport runs into a corrupt customs officer. Things escalate to a ruthless munitions smuggler kidnapping two security officers' daughter.

An ex-cop and divorce lawyer team up with a gangster to clear their names after getting involved in a dirty money scheme led by a vicious money launderer, who plans to expand his business and wipe out anyone who stands in his way.