A prestigious school "Kirisaku high school" listed the Bunburyodo to stage, school of survival story that has been isolated from the outside world, surrounded by suddenly a large amount generated zombie. And also the elder sister Chan rose series and view of the world, panic shooting action multiplied by the survival by somewhere happened schoolgirl five people of this world. Escape from the hordes of zombies that come to invasion in has been cut off from the outside in the school, repel, and draw until you live escape. Each there is an episode that becomes the backbone to the characters, while cooperation combined also force while holding a conflict, will overcome this impasse.