Amagoe Homura, a high school student you can find anywhere, finds himself in a devastated version of Shibuya. A mysterious figure calling himself "Unknown" tells everyone that they can commit any crime in this world, and forces them to participate in a death game where they compete on who can commit the most severe crime...!

Six members of the occult circle will spend a few days at a ruined love hotel during their summer vacation. Upon arrival they meet two additional people who join them, but in the morning of the second day, a female member was found tied & naked. In addition, the exit was locked by someone and the building became a completely enclosed cage. Will this be a repeat of the 'kodoku' that happened 3 years ago?