A motley group of Chinese prisoners held in the US is sent on a covert mission with the promise of a pardon: to go deep into Vietnam and destroy a secret depot of missiles that the US left behind during the pull-out.

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.

Jason Chan, a Hong Kong lawyer, is angry at the way the law protects criminals and decides to take the law into his own hands, dishing out vigilante justice when a key witness and his entire family are murdered. But hotshot cop Cindy Si is soon on Chan's case, and the situation unravels into a fight that only a few will survive.

Cousins Thomas and David, owners of a mobile restaurant, team up with their friend Moby, a bumbling private detective, to save the beautiful Sylvia, a pickpocket.