Sulli, a smart and talented student at Seoul Academy of the Arts is an obedient and sweet daughter. She always gets high grades at school because she wants to make her parents proud. She has a group named F(X) which are always by her side. She loves them as her own family. They are friends with Shinee. They are the most popular boys at school. She is close with Shinee except for Lee Taemin, her one and only enemy. She hates him because he thinks he's all that great but not to her. So they fight everyday.

What happens when they are forced to stop quarelling ?