Following the brutal slaying of an American family vacationing in rural France, a peculiar man living near the crime scene is blindly charged with their murders. Believing her client is innocent, expatriate American defense attorney Kate Moore and her team decide to take a scientific approach in order to prove his physical incapability to local authorities. As she delves into his enigmatic family history, she uncovers evidence that suggests the rebirth of an unexpected legend. When a bloodbath ensues, Kate must do whatever she can to survive the surrounding terror and prevent the chaos from spreading.