“François de Chazeron stared at the face with glazed, wide-open eyes in which horror froze. And not on the body, cut open by huge claws. He looked at the clenched fist of the deceased. Bloody gray wolf hair was intertwined in it with thin and long brown hair.” France. Beginning of the 16th century. Francois de Chazeron terrifies his vassals. All he needs to do is snap his fingers to declare any woman a witch and send her to the stake, although he himself secretly practices alchemy: in the secret room of his castle, the signor conducts monstrous experiments, and for them he needs girls’ bodies. But first, Shazeron deprives the girls of their innocence. On a moment's whim, the signor also pursues the graceful, cheerful fifteen-year-old Isabelle. The girl and her groom manage to escape, but the flight of the lovers only inflames Chazeron. His reprisal against Isabeau and her family - her sister and father - is terrible. But the consequences of this story are even more monstrous: wolf blood flows in the bodies of Isabeau and her sister Albery. Hellish metamorphoses occur on moonlit nights with the bodies of girls. And neither offenders nor loved ones will be able to live as if werewolves do not exist...