Five friends are released from prison and do their best to stay out trouble. While trying to mind their own business (and run their 5-Star Cleaning Service), they are caught up in a war between rival Triad gangs fighting for control of the counterfeit currency market.

In late 19th century Hong Kong, the British may rule the land, but the pirates rule the waters. Coast Guard officer Dragon Ma is determined that his beloved Coast Guard will not be made a fool of.