A lost Chihuahua and a kind town police officer. With their ideal image of a detective in their hearts, this mismatched duo races through the city!

A small police box at the crossroads in front of the station, the police station in front of Marihamadai Station. A lost puppy was entrusted to Officer Otonari, who was still working at the police box as a police officer at that time. The dog breed is Chihuahua. According to the attached collar, the name is Chappie.

Officer Otonari, tasked with searching for the owner of Chappie, got an eyewitness testimony that a person who seemed to be the owner entered the Marihama Grand Hotel as a result of the interview in front of the station.

As long as you know where you are, the solution is near. The man and the dog began their investigation in the hotel lobby, but when a guest came running in with a pale face, they were drawn into further incidents...

Otonari Koichi, 26, is always by your side in heart. To protect the peace of Marihamadai, he runs through the town with his little partner!