When a package arrives on Mrs. Connor's desk, everyone is eager to find out what's in it. Mrs. Connor hints that it's something that changes from one thing to another. The children soon discover that it's not a monster or a superhero, but a jar with five caterpillars. The class is going to learn about the life cycle of butterflies They patiently watch as the caterpillars eat and eat and grow and grow, become chrysalises, and then emerge as beautiful butterflies. And all the children agree that butterflies are "even better than a superhero."