Eun-joo develops a crush on playboy Jung-hwan after he rescues her from drowning, and vows to make him her man. One thing leads to another, and they end up having a one-night stand. Several years later, Jung-hwan is still living the high life while Eun-joo is working as a prosecutor. When they eventually cross paths, she reveals that he is the father of her twin children, and tries to make him grow up and take responsibility.