Manami is kidnapped, and the bag containing the 100 million yen in ransom money is carried away by Ryuji Ogikubo using a drone. Detectives Sato and Takagi are also pursuing Ogikubo as the suspect in an armed robbery. Ogikubo takes Sato hostage and heads for the hot springs, where he plans to meet up with his accomplice and split the ransom money. The detectives arrest Ogikubo, but the 100 million yen inside the bag has disappeared. Conan pursues Manami and Ogikubo's accomplice in order to solve the case.
