Yuu and Nobu are practicing manzai (a two-person comedy act) act on the roof of the school. At the same time, the school building is overflowing with the presence of non-human "something else." It is said that if a person dies after being bitten by one of them, it will turn into the same "something else" and attack people. In the chaos of the school, Will Yuu, Nobu, and the other surviving students be able to escape from its evil hands?
Un grupo de estudiantes quedan atrapadas en su instituto durante un apocalipsis zombie, y tendrán que buscar la libertad a base de usar bates de béisbol, bombas y comedia.
La historia comienza con la pacífica vida cotidiana de un grupo de estudiantes de preparatoria, que de repente se ve interrumpida cuando sus antiguos compañeros de la escuela comienzan a convertirse en zombies.