Cho Kyuhyun is a female high school student, always at a loss because she's mistaken as an “easy bimbo girl” due to her appearance. Furthermore, somehow a rumor spreads that she had kissed the most popular boy in her grade , Shim Changmin and she has to deal with being the target of harassment by other girls who like him. But ever since junior high school, Kyu has actually been fond of a boy called Choi Siwon. He gives his all to the basketball club, and although Kyu can watch Siwon from a distance, she is never able to reveal her feelings.