Conan and the Detective Boys go to the Beika Dinosaur Museum where they watch a show featuring dinosaur costumes. After the show, they hear a loud noise from the second exhibition hall. Museum direction Shida has been crushed by a fossil display. Curator Kuchiki and office clerk Yua begin accusing each other of murder, but show host Naito jumps in to defend Yua. It seems that nobody liked Director Shida. While the police question each of them individually, the Detective Boys search the museum for clues, and...