Five friends Teapot, Vaseline, Exhaust Pipe, Curly Jerk, and Ranks are set free from prison with pledge to stay out of trouble and start theis own cleaning service business. When serving a customer who turns out to be the ruthless underworld counterfeiter "Boss Chau" and steal his counterfeiting plates, the crew is forced to enter the war between tough Triad gangs competing for taking over the counterfeit currency market.