L a.k.a Kim Myung Soo is a cold guy. No other students are even want to talk with him but only his group members, Infinite. One day, a new transfer girl student came from her old school and study in the same school and same class with the most, top & handsome kingkas, Infinite. What will happen to the girl named Lee Seulli between Infinite? Are they getting along or… there's a mystery & dark secret…