Otto loves cars more than anything else in the world. He plays with cars, he dreams about cars, . . . he even eats cars (his favorite cereal is Wheelies). But that all changes when he awakes one morning to find that he has somehow turned into a car.Otto soon realizes that there is a downside to actually becoming his favorite thing. While the rest of his friends get to play and draw, Otto can only honk and sputter. Will Otto ever be able to switch gears and go back to being a boy?