Kim Yerim and her long time rival, Park Sooyoung have always had it out for one another, and stop at nothing to get each other back with pranks. Only one day when one of Yeris pranks goes terribly wrong and injuries Sooyoung. The girl wakes up thinking she is Yeris girlfriend. "My what!" Yeri screams. "Im your girlfriend right, Yerimie." Joyri, slight Seulrene