A Hero Never Dies

Jack (Leon Lai Ming) and Martin (Lau Ching-wan) are hired guns, each loyal to a different kingpin, and they have spent close to a year trying to kill each other's side. Then their bosses make peace, and both men are dropped with nothing to show for it. Johnnie To follows them as they stop being enemies and turn on the gangsters who used them, two professionals recognizing in each other the only person who understands the job.