Hyumin, a girl who loves to bully and tease Jeongmin because Jeongmin is a clumsy boy . Jeongmin hates Hyumin for teasing and bullying him all along. However, thats who Hyunmin is when she is in love. Deep inside her, she actually love Jeongmin but do not have the courage to tell him until 1 fine day he left the school. She met Onew and after much hesitation she finally became friends with him. But what she doesn't know or too sure is that both of them are brothers.. However~

Years later, she was shocked cause she get to see Jeongmin again but not in reality but on TV! Jeongmin became apart of a group called "BOYFRIEND"  

What will she do when she found out that he's an idol now?