Ku Jae-hee, a Korean girl living in the United States, sees on TV the performance of high jumper Kan Tae-jun. She is captivated by his grace and agility. Her admiration for the boy is so great that she pleads with her parents to let her go to Korea. Disguised as a boy, she transfers to a boarding school where Tae-jun studies. But in the very first week, her secret is revealed by the school doctor and her roommate.