Takamaru Takuya, a member of the Metropolitan Police Department’s Second Mobile Investigation Unit, becomes buddies with Shimanaga Shoichi, a detective nearing retirement age, in place of his injured partner. Takamaru is disappointed, but on the first day of his investigation with Shimacho, a man’s body is found under an elevated railway in Shibuya. When Shimanaga sees the body, he instantly finds out that the photo ID in his pocket is a forgery and that the man is wanted for habitual theft. Yes, Shimanaga is a detective with an unexpected ability! Adapted from the novel series "Mobile Investigation Unit 235" (機捜235) by Konno Bin (今野敏).