During a visit to Tottori, Kogoro, Conan, and Ran come across a case. Shuko, wife of the Kumado family`s eldest son, had her hands and feet bound by a robber, and the family`s heirloom incense burner was stolen. A pedant found at the crime scene casts suspicion on the family`s former housekeeper Naomi, but Kogoro and his family saw her at the sand museum at the time of the crime. Later, head of the household Kumado Isao receives an e-mail on his phone demanding 10 million yen in exchange for the incense burner. Kogoro suspects the crime was committed by a family member who was trying to frame…