On their last day of summer, four high-school girls confront sex, violence and their uncertain future as they struggle to reconcile a rebellious youth with impending adulthood.

讲述因故被永久除名的国家代表出身的跆拳道选手，回归担任国家代表精神教练，对抗胜利者独占的不合理世界，展开真正胜负的死守精神体育类电视剧。