Claire and Maurice have to take the whole family to Claire's father's funeral. This tightly knit family is not only composed of Claire's vegetarian son, Alex, who's secretly fond of Maurice's daughter, Lucie, the teenage rebel, but also Claire's brother, a poet living under his sister's roof; without forgetting young Prune, Claire and Maurice's daughter, who will develop a passion for the country's emblematic cows. They must all strive to get along during the road trip to Willouby.

Simon has just been released from prison and is on parole. His friend, Albert, lures him back to his old ways for one more hit. To steal the priceless diamond Florentin. Simon's plan to steal the diamond goes sour. Others are also after the diamond, such as gangsters and ruthless killers.