One dark night in the winter of 1896, in remote upper Provence, a family is brutally massacred. Only a three-week-old baby miraculously survives. In 1920, the orphan, Seraphin Monge, finally returns home from the war to pursue the truth. Haunted by the image of his mother's dying moments, he turns on the house that has seen such misery, destroying it stone by stone. As the walls crumble, the killers' identities are laid bare and his anger turns to vengeance. But for every murder Seraphin plots, another hand silently executes it in his place.