Firemen put out fires, cows make milk, and you help your parents clean the house—right? Everyone has a job to do, and everyone has a purpose. But when someone tells a dragon named Bill that he's imaginary, he finds himself scorned by unicorns and librarians alike. After waking the baker, meeting the king, and stuffing his belly with corn, Bill discovers his true role in life and learns that bulllies, sticks, and stones are no match for a really big burp.