Brotherhood of the Wolf (2001) is a French historical action-horror film set in 18th-century France. The story follows Grégoire de Fronsac, a knight and naturalist, who is sent by the king to investigate a series of brutal killings in a remote province. The victims are said to have been killed by a mysterious creature known as the Beast of Gévaudan, a terrifying wolf-like creature that has been terrorizing the region.

De Fronsac, accompanied by his loyal Native American companion Mani, begins his investigation, uncovering a sinister conspiracy that involves the local nobility, hidden secrets, and dark political intrigue. Along the way, de Fronsac becomes entangled with the beautiful and enigmatic Marianne, whose own connection to the events complicates matters further.

As de Fronsac gets closer to uncovering the truth, he must confront both the beast itself and the powerful forces determined to keep the truth hidden. The film blends elements of horror, mystery, and action, with intense fight sequences and a gripping storyline that culminates in a shocking revelation about the true nature of the Beast. Brotherhood of the Wolf is a tale of intrigue, betrayal, and the fight for survival against both human and monstrous threats.