This is just too much for a schoolgirl to handle! First, Maron's teacher might have seen her transform from Kaitou Jeanne back into Maron! Then, Fin visits, but only long enough to say that Sinbad and Access are summoning demons to their world! For Kaitou Jeanne this time, it appears that a live dog is being possessed by a demon, rather than an inanimate object. To make matters worse, the dog is a guide dog for a blind woman that Maron meets. If Kaitou Jeanne "checkmates", will the dog disappear forever?!