"For many years O resides in an isolated world of killing and loneliness, after the death of his love Nancy. O owns a spotless apartment, and Chin who is hired to clean the apartment, has never met her mysterious employer. Tok, flamboyant and reckless, fancies the thrill of killing and is driven to become the No. 1 killer. He creates doubt in Chin's mind and Chin knows that Tok's intention is to reveal the true identity of her employer. Tok's insistence in challenging O into a duel forces him to rescue O out of the arresting hands of Lee, an International Police Chief inspector. The two barely escape the pursuing police and vanish altogether... which killer will come out alive"?