When a despotic student attempts to take control of the school, Sho tries to bring his classmates to their senses. But while the students squabble over power, something horrible comes closer and closer...something that followed them out of the wasteland...something that can't be stopped. As the school is besieged, the students fight back desperately, weak with hunger. But this time, running out of food is the least of their worries. This time, they are food...