Neko Tsukahara is settling into her job at Tasogare Hotel. Hoping to prove herself, she volunteers to assist a new guest—a man with a pansy-shaped head and an unsettling vibe. After escorting him to his room, Neko searches for clues to help him recover his memories. She soon discovers that in the living world, he was a medical student and part-time detective named Masaki Osoto.