Misaki and Kozue want to make the perfect documentary about school, but their subject matter turns dark when the student body suddenly grows violent.

Maho and Riko were close once, but a distance has grown between them. In the face of disaster, will that gap close once again?

Sanctuary no longer secure, the survivors make a break for safety and try to rendezvous with Megunee, but the sight of familiar faces may prove their undoing.