The end of the world is coming, and monsters are rampant. But the monsters here are "contained objects" with supernatural rules. For example: [Human skin that knocks on its own door], [Stairwell that never ends], [Microphone that lets you tell the truth]. The order of the official shelter collapsed, and the owner group of the community issued an announcement: "Dear neighbors, this unit building has been changed to a 'Doomsday Containment Center'. Please abide by the "Resident Code" and avoid triggering the characteristics of the contained objects..."