Like the flashy sports car he controls, Detective Sargent Jun Ma (Donnie Yen) of the Serious Crimes Unit is precise and brutal. Determined to destroy his criminal nemeses Archer, Tiger and Tony (Collin Chou), a gang of three powerful brothers, Jun Ma infiltrates their corrupt organization with the planting of a mole, Wilson (Louis Koo). When Wilson’s dual role is exposed, he becomes the last living witness to testify against Archer and now Jun Ma must battle to protect his partner from the murderous thugs to ensure they are put out of business permanently.starring: Donnie Yen, Louis Koo, Collin Chou