Young-Joo (Lee Na-Young) 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 (Jang Hyuk), a well dressed womanizer, who is infatuated with his Australian English teacher Catherine (Angela Kelly). 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.