In a remote village in France, two detectives intersect in a dark and chilling case that tests both their professionalism and their inner demons. Pierre Niémans, a renowned investigator, arrives in the area to investigate a mysterious murder where a young man has been brutally killed and his body left in a disturbing position, as if sending a macabre message. Meanwhile, his colleague, Inspector, skeptical and disdainful of urban myths, faces a second case in which a corpse has been discovered in an ancient monastery, suggesting a connection to cults and arcane secrets.
As the two men work separately, they soon realize that their cases are intertwined in a more sinister way than they imagined. The tension escalates as they uncover a pattern of crimes that date back to the village's history and to secrets that many would prefer to keep buried. With each thread they unravel, they are drawn into a world of violence, obsession, and revenge, where not everyone is what they seem.
As they grapple with external forces—and their own ghosts—the detectives must confront not only a ruthless killer but also the dark history of the place that threatens to consume them. Will they manage to unravel the truth before it's too late?