Le bonheur des Dupré

Two couples, Pierre and Aimée, Éric and Pénélope, all share four years of friendship without cloud. Only concern, Penelope and Pierre have become lovers ... The situation becoming untenable, they decide to break. But after a final night of passionate love, fate plays a trick on them: Peter and Penelope each wake up in the body of the other! To protect their secrecy, they each find themselves having to live the life of the other. This is the beginning of the complications ...

Barnie lives in Calais but works in London. Everyday, he takes the Eurostar to go to his office. Although he is married to Lucie, Barnie has two lovers in London: Margot, a young and fresh advertising executive, and Mark, a hot 35 years old auctioneer. Everything could work out fine like that, until Margot, Mark and Lucie separately offer Barnie the same birthday present: a return ticket to Venice on the Orient-Express, and on the same dates. What will Barnie do? Who will he choose to go with? After thinking that going with Lucie could actually save his marriage, problems are not over: Margot and Mark both show up at Barnie and Lucie's house, pretending to be a couple, and asking Barnie for some explanations. Which he obviously can't give...

Conrad Lang, a handyman in a rich family - he has been raised like a brother with Thomas, who has the same age -, accidentally puts fire to the big holiday house he keeps. He returns to the town he grew up in, to the family home, where Philippe, Thomas's son, and Simone are getting married. Conrad's frequent memory loss and behavioural problems rapidly reveal a neurological disease (Alzheimer's is suggested by doctor Cohen when he examens Elvira) which leads Elvira, Thomas's stepmother, to install Conrad in a guesthouse on the property, with the help of a nurse. When Conrad looses more and more his landmarks in present and past, memories of his youth come back to surface. They intrigue Simone, since these memories do not entirely fit together with the official family history...