Twits Next Door

When a moving van arrives next door to the Twits and Mr. and Mrs. Lovely get out, that's bad enough. But it gets WORSE. . . Their two Lovely children, Ruff and Tumble, have moved in next door too. And the Twits HATE children. (Sorry if you are one. We don't hate you, just to be clear.) The Twits decide the Lovelies MUST go. Even if it means some serious plotting, which involves: a hungry tiger, GIANT catapults, and LOTS of disgusting dog hair.
Will the horrible pair succeed in their dastardly plan? Or can the Lovelies out-trick the terrible Twits?