Hajime, Miyuki, Inspector Kenmochi, and Superintendent Akechi are on JAM flight 377, despite the terrorist threat received right before takeoff. They`re getting closer to home when smoke suddenly fills the plane from the rear and the passengers panic, thinking it`s terrorism. But things aren`t what they appear as Hajime and Akechi soon find themselves trying to solve a locked-room murder case 10,000 meters in the air!