Young Joo is selected by her co-workers to take an English class for her department. On her first day in class, things suddenly turn interesting when she meets Moon Soo, a well dressed womanizer, who is infatuated with his Australian English teacher Catherine. Moon Soo does not notice Young-Joo because of her ordinary appearance, but Young Joo takes matter into her own hands to gain his attention. As Young Joo and Moon Soo become closer, Young-Soo soon discovers a picture in his wallet of another girl.