An assassin (Wu Jing) who is fresh from his latest kill becomes stranded in on island, when he inadvertently befriends a female police officer (Celina Jade). As the night progresses, the unspoken truth honored by the two sides of the law is broken. After the remains of a body that belonged to a drug lord and syndicate crime leader are found, chaos ensues and criminals ravage the once peaceful streets in a race against time to find the mysterious murderer that's loose and out for blood.