When Seung-min was on his first year at the Academy of Architecture, he met Seo-yeon. She was a musician student, and Seung-min totally fell in love with her. Years have passed, and now he meets Seo-yeon again - she asks him to rebuild her father's old house.

A model student transfers to the notorious Jungmoon High School known for its severe corporal punishment by teachers and power struggles between school gangs.