Jae Sup, a thirty-two-year-old man who teaches Korean at a night school, refuses to communicate with anyone other than a hooker he meets on the street. He goes to a college reunion when he hears that his old flame and alumna Hye Kyung is getting married but gets mad at himself for not being as socially mature as her. When a new student called So Hee enrolls at the night school, Jae Sup senses her pain. He finds himself attracted to So Hee, who seems to be both naive and mature.