The story revolves around Hiroshi Inaba, a private detective, and part-wolf-part-human being who was created artificially. Hiroshi runs his own detective agency and solves cases with the help of his cross-dressing secretary Yuuta, and Kei, a "relatively normal" teenager. The plot centres on Hiroshi and the gang trying to arrest his arch-nemesis Don Valentino, a mastermind goat with a taste for money (literally).