In her beloved car, "Grace", a wife is on her way to Narita. Following a bus accident that kills her, her husband, Kikuo, gets access to her GPS which contains the history of all the places she travelled to without his knowledge. Suspecting infidelity, Kikuo embarks on a journey to trace the history of the car's GPS in order to solve the mystery.

Ce synopsis est en anglais : nous ne l'avons pas encore traduit.