It’s back to school for the New York Times bestselling Cat when he steps in as a substitute teacher.

Cat is not pleased to be tapped as substitute teacher. Not only is it cutting into his naptime, but a roomful of kittens is a little, well, scary. At school, he’s faced with six adorable kittens and follows the lesson plan of music, building, and painting-only in pure, mischief-making Cat style. By the end, Cat has learned a thing or two about inspiring others by being himself. But even more heart-melting and humorous is what the kittens have learned from Cat.