The story begins with a hit man named Wong Chi-ming (Leon Lai) and a woman he calls his "partner." They hardly know each other and rarely see each other but she cleans his dingy apartment in club clothes and faxes him blueprints of the places he's to hit. Infatuated with him, she frequents the bar he goes to just to sit in his seat and daydream about him. One late night, Wong has a late night meal at McDonald's where he meets Blondie, who invites him into her apartment. While they spend time together, she has illusions that he's the ex-lover who left her for another woman. Wong's partner finds out about the relationship and, after he tells her he wants to terminate their business relationship, she asks that he do her one more favor.