Han-ki (Jae-hyeon Jo) is a brutal thug and a pimp who one day sees Sun-hwa (Won Seo) on a park bench and becomes obsessed with her. Forcibly kissing her, he is beaten by bystanders. Han-ki then sets her up in a sting, and blackmails her into becoming a prostitute when she is caught breaking the law. After which he watches her through a peephole.