Deep in the heart of the Moselle, in the Uckange furnace Park, is a crime scene as spectacular as it is baffling. The victim is the former Director of the site. When the relentless but sensitive Clément Leroy, captain of the criminal section of the Metz gendarmerie, sets out to investigate, he reconnects with his childhood love, Laure Thouvenin, the victim's daughter and a specialist in industrial history. As this free and unconventional woman becomes increasingly involved in the case, she and Leroy unravel the shocking story of their respective families running over three generations.
Sami and Patrick are long-time friends. Sami is a hypochondriac. One day, following a misunderstanding at the hospital, Sami thinks he has an incurable neurological disease. He decides to live his last moments to the fullest and goes to India to be treated by a great local "doctor". In the meantime, his friend Patrick, who has been accompanying and supporting him without knowing that this illness is in fact fictitious, finds himself without a wife or job. The initial situation seems to be reversed; Patrick is out of luck and Sami seems less and less ill.
On the eve of World War II four Parisians cope with the impending invasion of their city by German forces. While the French government braces for impact, the intersected lives of a young writer, a vain movie star, a French politician and a young scientist are examined as they attempt to deal with war and evade German spies.
The story of Itineraire Bis has no singular plot line, but swings back and forth between the adventures of a young man who wants to buy a pizza truck and the lives of two middle-aged brothers living in an enormous house. One of the brothers is wheelchair-bound and eventually makes the acquaintance of the pizza-driving aspirant and decides to give him the money he needs -- though this act of generosity in no way shields him from his own destiny. Other characters wander in and out of the story, such as Jeanne (Martine Kalayan), the young man's lover.
In this complex chronicle of the evolution of a provincial family's life, the story follows three generations of at least two neighboring families from the 1890s to the 1970s. In one of many related tales, a man who was engaged to the older daughter of a farmer elopes with the younger one. After many years and the birth of five children, the man leaves his wife and family for the bright lights of the city but continues turning up from time to time, until he is finally taken into the home of one of his sons when he is a quite old man. The complex interactions of the legitimate and illegitimate children of a womanizing miner give rise to yet another set of related stories.