The story is about a knight that turns into a wolf 3 times a week , and he's hiding this secret from his wife. He decides to tell her and show her his most important secret. If someone steals his clothes he can't turn back into a human.
The wife ends up betraying him, and steals his clothes. He gets turned into a wolf. He can't turn back into a human, so he ends up going to the woods. A king is hunting in the woods, and finds him. He lets Bisclavaret (wolf) come with him to his castle to stay.
The wife of the wolf appears before them one day. They end up getting into a fight, but no one gets hurt that badly. He gets his clothes back from her and turns back into a man. The king restores the fief that was stolen from the knight, and exiles the wife that betrayed him.