What would you do if on the very first day of school, Dinosaur wasn't smiling his big, toothy dinosaur smile? This little boy knows exactly what to do. His Dinosaur is worried that school will be too big and too noisy, with yucky food at lunchtime. But with such a good friend to reassure him, Dinosaur soon discovers just how fun and friendly school can be. And by the end of his first day, Dinosaur is once again smiling his big, toothy, dinosaur smile and better still, he can't wait to come back!