Former mechanic Mamiya Hibiki goes to a hospital to search for remedy for Kurumi, who disappeared after being infected with the golem virus while carrying his child. Upon arrival, Hibiki realized that the outbreak of the golem virus has already happened in the hospital. During the panic, Ito Aki, a nurse who is pregnant with doctor Igarashi Shuichi's child, was pushed down the stairs by someone, lost her consciousness and later woke up in a room with many golems. To survive in this apocalyptic world for Kurumi, Hibiki cooperates with the survivors in the hospital and decide to a research institute which has the therapeautic drug Hibiki is looking for.

Mamiya Hibiki meets "Golem Hunter Ace", who claims to travel around the world hunting zombies and communicate with other hunters from various places via a walkie-talkie, and Reina, a lady who was saved by Hibiki during his journey. Hibiki and his friends decide to visit "Ichinose Resort", a rumored resort where young survivors gather. The "Ichinose Resort" is surrounded by fences and they meet Ichinose Ryo, the leader of the group of young people. Ryo welcomes Hibiki and his friends cheerfully, but it seems like he has a dark side.