It's graduation day. Junichi Shinohara shows up at school following a prolonged absence, to find a gigantic "pit" dug in the middle of the campus and all his classmates gathered in the classroom. Then, a strange message comes over the PA system. "In one hour, everyone will die. There is only one way to survive. You must offer a sacrifice." At first, Shinohara, Rika Suzuki and others think it's some sort of bad joke. But when the first victim is claimed, they realize it's a terrifying reality...
竹富聖花
as Rika Suzuki
須賀健太
as Junichi Shinohara
木ノ本嶺浩
as Hiroki Hiyama
山本ひかる
as Yumi Saito
菅野莉央
as Rei Konno
清野菜名
as Mizushima Ryoko
Toshio Takeuchi
as
笠松将
as Nozaki Takao
