The story takes place at a certain middle school where several murder cases take place. Kobayashi, a boy who goes to this school, meets genius detective Akechi, who comes to the school to investigate. Kobayashi takes an interest in Akechi and, in spite of his friend Hashiba's worries, he volunteers to be Akechi's assistant.

Ranpo Kitan: Game of Laplace (乱歩奇譚 Game of Laplace, lit. Mysterious Stories of Ranpo: Game of Laplace) is a Japanese anime television series produced by Lerche and directed by Seiji Kishi premiered on Fuji TV's Noitamina programming block in 2015.^[1] The anime is inspired by the works of author Edogawa Ranpo.