Hajime Kindaichi is working a part time job as an assistant to a TV station for the filming of a shock show. They have invited celebrities in Segori Village and are planning to scare them by playing pranks on them such as fake deaths. However, a threatening letter arrives and soon, a real murder occurs broadcasted in front of everyone.

Kawashima senses a strange presence inside his apartment, and sets up security cameras in an attempt to find out what that is. Then the doorbell rings, and a succession of other bizarre phenomena send him into a state of panic.

With the Gyaos re-emerging, Gamera's ties to humanity have been severed with his bond to Asagi broken. Nagamine and Asagi investigate while an orphaned girl named Ayana discovers a new creature she names Iris. Nagamine and Asagi must reach Ayana before she takes her revenge on Gamera, who she blames for the death of her family.