While playing with his toy train Maurice sees something on his Mommy's car that grabs his attention. He sees a Polly Wog. When he tries to show Mommy what he saw, "POOF" it disappears. He sees it again while he's with his Daddy the suddenly, "POOF" it disappears again before His Daddy sees it. Maurice is sure nobody believes him. He's sure that they think he's making it all up. This makes his little heart so sad. Will Maurice be able to show this family what he sees or will they think his imagination is getting the best of him?