Once Jeu Sonyeo graduated she never thought she would have to deal with Byun Baekhyun - the school's biggest playboy - ever again. Well, things change. Now - due to unbelieveable circumstances, that would only happen to her - she is living with a boy she can't possibly stand, and her feelings are starting to bubble up again. But Baekhyun has swore he has stopped his old ways, can he keep true to his promise???