Ran wins a trip to Nagasaki with Mouri and Conan. While touring the city, they unintentionally interrupt the filming of a mystery drama. Mouri is hired as a consultant to figure out the story's ending because the scriptwriter disappeared. The group examines the scriptwriter's room and finds newspaper clippings of a real case of serial thefts. The group spots the scriptwriter but he runs off before they can catch up to him.