The game follows Cocoro Fuyukawa and Satoru Yukidoh, who frequently experience a phenomenon that makes their minds switch place with each other, putting them in the other person's body. Cocoro is stuck in a blizzard in an emergency cabin on a mountain together with three other people, while Satoru is in an institute for the treatment of mentally ill criminals, having lost his memory. The player takes the role of Cocoro, and reads the story while occasionally making choices that affect the course of the story, attempting to keep her alive for seven days; after doing so, they are able to play through the seven days from Satoru's perspective as well.