Bisclavret tells his wife that he turns into a were-wolf at night. She does not like it one but and is a bit scared.
Bisclavret's wife is so traumatized that she made a plan to try and make her husband go away by taking away his ability to turn back to human
The king goes hunting and he sees the were-wolf and sees how nice the were-wolf was so he takes him back to the castle and they talk. They have so much in common. They became friends.
The party has started and Bisclavret's ex wife shows up with her new husband and it angers him. It also shocks that peeople and the king becasue he is the nicest wolf, so they belive him and blame them.
He bit her nose off as they forced them to give his clothes back. It was to teach her a lesson and to show how ugly she really is on the inside
He turned back into man and lived hapiley ever after while his wife and the knight were exiled forever for their treacherous act .