They're broke and they're going on vacation in a cave, an economical solution...

On New Year's Eve, among the tower blocks of a huge housing estate in Paris, strange people - each for a different reason - are looking for the home of a man called Bob.

Village of Artigat, southern France, summer 1542, during the reign of Francis I. Martin Guerre and Bertrande de Rols marry. A few years later, accused of having committed a robbery, Martin suddenly disappears. When, almost a decade later, a man arrives in Artigat claiming to be Martin, the Guerre family recognizes him as such; but doubts soon arise about his true identity.

Jules, a young Parisian postman, secretly records a concert performance given by the opera singer Cynthia Hawkins, whom he idolises. The following day, Jules runs into a woman who is being pursued by armed thugs. Before she is killed, the woman slips an audio cassette into his mail bag...