A group of suicidal Japanese people decide to rent a bus, take it on a 'tour', and fake an accident at a spot known to be dangerous. This way, their relatives will all collect life assurance policies. However, Mitsuki gets on the bus with a ticket intended for her uncle, and does not want to die at all. Gradually, her love of life alters how the other passengers feel, but she still doesn't know what the others have planned for the bus.