The movie "Monster Girl Nemona" is adapted from Noel Stevenson's comic of the same name. The story takes place in the Middle Ages and combines fantasy and science fiction. The protagonist Nemona is a young transformer, a knight who has been falsely accused of committing a serious crime and seeks help from a girl who is good at transformation to prove his innocence. But what if this girl is the monster he once swore to eliminate? What should he do?