In 18th century France, the region of Gévaudan is plagued by a series of brutal attacks from a mysterious and lethal creature that terrorizes the local population. In the midst of this chaos, the royal court sends an expert hunter, Grégoire de Fronsac, and his Native American companion, Mani, to investigate the phenomenon and put an end to the threat. Upon arrival, the two men find a village steeped in fear and superstition, where rumors about the beast are interwoven with local legends.
As Grégoire delves into the secrets of the area, he establishes an intriguing relationship with the beautiful and enigmatic Marianne, who seems to be more connected to the creature than she appears. As the hunt progresses, new and dark twists reveal a web of conspiracies, political manipulations, and hidden truths that threaten not only the lives of Grégoire and Mani, but also the stability of the kingdom.
With a blend of action, horror, and drama, the story unfolds in a gothic atmosphere, where the line between the human and the supernatural blurs. As the men struggle to understand and confront the beast, they must also face their own shadows and the dark secrets that the region has kept beneath the surface. Will they be able to unravel the mystery surrounding the creature before it is too late?