An imprisoned swordsman is accused of killing three men. He probably would have already been executed for his crimes but is kept alive because he knows the whereabouts of hidden gold.

"Rainy Night Butcher" Lam Gor-Wan, a night shift taxi driver who dismembers prostitutes by day in his family's tiny Tsim Sha Tsui apartment without arousing suspicion, until he delivers a roll of film containing pictures of his latest trophy to a local photography shop.