Ron is excited to solve cases by using Toto, but he's not on any good ones because his boss thinks he's useless. All he gets are odd jobs and busywork. Ron, however, is quite interested in a new report about coins going missing from a piggy bank...

Ron wins a pair of tickets to a hot spring in a raffle. Toto accompanies him to stay at the Benizome Inn. The innkeeper who greets them is friendly, but he isn't who he seems. Plus, it isn't long before Ron's eccentricities begin to surface.

There has been a murder. Ron listens to the other guests' testimonies and begins his deductions. Spitz secretly rejoices at this chance to catch Ron in the act of sleuthing, but outwardly both he and Amamiya entrust the investigation to Toto.

Kawasemi Omito, a supremely skilled detective, leads a joint investigation into a serial killing case. Amamiya lends him Toto, whom Kawasemi deems so useless he's invisible. Ron appears at the newest crime scene as a consultant, irritating Kawasemi.

Ron loves a certain TV show that puts psychic abilities to the test. During a live broadcast, a psychic claims he can control minds with written words. His neurosurgeon opponent refutes his claims. Then, the psychic writes the word "Death" on a card.

Toto and Ron are invited to a meteor shower viewing being held on Nandan Island. Also invited is John Grizzly, an instructor at BLUE. There was a murder at the observatory years ago, so the director has brought in first-rate detectives...just in case.

Ron is named main suspect in a murder and Toto investigates to clear his name. Everyone but Ron has an alibi for the time of the murder, which only seems to cement his guilt, but Toto discovers a few things that cast a new light on the incident.