An Australian cop heads to Hong Kong to head off the supply of a new designer drug which raises the sexual appetite of anyone who takes it.

What happens when a glamorous express, with high government officials, wealthy merchants, concubines and a gang of brigands on board, speeds towards the small town of Hanshui, where escaping bank robbers, corrupt officials, and gamblers await? Well, let's just say the Titanic had a smoother maiden voyage.

A group of desperate Chinese criminals hope to make a quick, effortless score in Hong Kong. Things go afoul, and the gang must hide out until the heat dies down, besmirched with the blood of an undercover cop.