Conan Edogawa, Kogoro Mori, Ran Mori, Ayumi Yoshida, Genta Kojima, Mitsuhiko Tsuburaya and Ai Haibara are invited to visit a client in a hotel beside a theme park called Miracle Land. Ran and the kids leave after being given free theme park wristbands, while Conan and Kogoro are forced by the the client to solve a mystery to remove the wrist watches, which are set to detonate. The client also reveals that the wristbands given to Ran and company are set to detonate should they leave the premises. The mystery man reveals that two other detectives gave up, one killed, while one is still working.