Yuusuke and the exploration team went to the camping resort to prepare it for the rest of the survivor group to move in. As night falls, they are suddenly called back to the city hall due to an emergency. Sensing this disturbance, a dozen intelligent zombies take this opportunity to attempt to overrun the city hall with a zombie horde.

Based on the popular web novel of the same title. The story covers the latter half of volume 3 (Chapter 45 "Jisatsusha" to Chapter 60 "Hikari") of the web novel.