While Chase is haunted by the fact that Kiriko and Mr. Belt's voice appears in his memories, Shinnosuke escorts a popular fashion model who has come to the police station because she fears she is being followed by a supernatural creature.

Mashin Chaser is revealed to be Kamen Rider Protodrive, but Mr. Belt cannot figure out how to get him to return to his original self. Meanwhile, Shinnosuke tries to figure out why Rira is being targeted and/or protected by Roidmude 096.