Agasa wins a trip to a beach resort and gives the tickets to Kogoro, Ran, and the Detective Boys. On the plane, Ran falls asleep and dreams about a murder that occurred on an Airliner. In the past, a photographer named Kazuhiro Ootaka is found dead in the bathroom. Shinichi reveals that Ootaka was put to sleep and was killed by having a thin metal object dipped in poison and having it injected into the back of his head. Megure gathers four people who have entered the bathroom during that time and search them for a weapon but to no avail. After a thorough investigation, Shinichi reveals Tsugumi Amano, Ootaka's girlfriend to be the murderer. Shinichi reveals that Amano used a sharpened brassiere wire to commit the murder. Amano confesses and reveals that Ootaka set a building on fire for pictures which inadvertently caused her brother's death.