The Twits tells the story of Mr. and Mrs. Twit, one of the nastiest and most unpleasant couples imaginable. They spend their days playing cruel tricks on each other, mistreating animals, and making everyone around them miserable. However, the clever Muggle-Wump monkeys and a group of resourceful birds decide they have had enough. Together, they devise a brilliant plan to outsmart the Twits and teach them an unforgettable lesson.