A mysterious space caused by a car accident, a nightmare place that can bring back lost things and dead people. That unexpected accident brought about a change in the young girls. When the warm sun girl becomes the frost girl, and the super-powerful girl becomes a loser overnight, what else can't be done in this game of death? Six years ago you exchanged for me, and now I exchange my life for you, the one I love most in my life, just to see your smile as warm as before.