Jallaganeun Geunomdeuregen Mwonga Teukbyeolhan Geosi Itda

Our young heroine - Choi Lee Na. She has a brother who's the leader of a gang of four members. All four of them are arrogant and one of them seems to be a playboy. On one stormy night, Lee Na somehow bumps into one of them and cant forget him ever since then. Is this the beginning of love?