Rosa is the mother of five children and married to a cantankerous Sicilian. She runs her household in a frenetic daily routine. So, to provide for her family, she secretly takes out loans... but the weight of the debt eventually plunges her into denial and loneliness. Until the day her son Nino discovers an eviction notice. He will reluctantly take on the role of an absent father and seek every possible solution to get his family out of this situation.

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.