Little Bill can barely contain his excitement because now that he can sign his name, he can get his very own library card! At the library, Little Bill and Monty check out a great dinosaur book. As they're leaving, Monty rolls down the wheelchair ramp, pretending that he's a flying Montysaurus. Little Bill joins him as a flying Little Billasaurus. Back at Little Bill's house, the boys decide to play dinosaurs in the backyard.