Nelson is a very lucky little boy. Not only is he off to the fun fair, but it's his auntie's fun fair! He can't wait to see Auntie Claire and her family, as well as his friend Cy - and to go on all of his favourite rides. Plus he gets to stay in Auntie Claire's caravan, which much more exciting than a house. But not everything quite goes to plan, and soon Nelson discovers he's still a bit too little to do everything he wants to do. Luckily, he'll soon see that even though he's still small, he can have tons of fun - and that actually helping out can be as much fun as playing at pirates, or...