Kang Ji, who majored in physical education, is appointed to a girls' school in a small city by the sea and takes charge of a volleyball team. From his first day, Seun Hee and Eun Kyeong, make little troubles for him in fun but he accepts it with pleasure. Seung Hee has a feeling of love to him. As this rumor spreads out, Seung- Hee doesn't come to school and Kang Ji goes to see her.