Kim Miho(you) is a girl who hardly remember her past after the death of your parents.she didn't remember even a single memory she had with her parents and she didn't remember how her parents died. She moved to Cube Ent. High School (music school like the one in dream high) because her mother's friend Lee Soo Young,her mother's junior in college, is a teacher there. She met a new friend there and her name is Choi Hana. At first, she fell for Dongwoon. Then she knew, HYunseung is the ONE.