Maron's friend is possessed by a demon, again. Maron, Miyako, and Chiaki are invited to go to an amusement park by him. Chiaki and Maron end up separated from the other two and decide to ride the ferris wheel together in order to find the others. A power outage stops the wheel while they are at the top, Fin finds the picture with the demon, and Maron and Chiaki both secretly hop out and try to "Checkmate."