Seolhyun moves to Seoul to join one of the most elite schools, Namsan Prep.  Little does she know the school and everybody in it is run by the local gang GOT7.  So when she stands up for a fellow classmate being bullied and one of them claims her as their own, it means war.  Let's see who wins this battle, the smart and stubborn girl, or the 'wild and y' boy.