As an NPC in the game 'Doomsday Inc.', [Patient Zero] unexpectedly gained self-awareness. She tried hard to mess with the player's game process to prevent the player from completing the level, but the entire game was deleted. In order to repair the game, she returned to the automatic archive state. Home, she wants to take the [Repair System] to travel through worlds with [Doomsday Elements] to collect them.