Ebisuzawa Kurumi, Takeya Yuki, Wakasa Yuri, and Naoki Miki all attend the same high school. They also live on campus at the school. The girls enjoy their time at the school until students become infected by a virus and turn into zombies. The girls are surrounded by student zombies and they struggle desperately to survive.
Mai se entera de que su hermana menor, Yui, una maestra de una escuela de primaria, ha desaparecido. Mai se lanza a investigar que ha podido ocurrir con ella... Su única pista es que recientemente había visitado la casa de uno de sus estudiante...
