Aunt Susan - an unstoppable force and possibly the bossiest woman alive - is on the phone and that’s never good. She’s insisting that Harry and his family help her at a local event she’s promised to organise: the Great Toadpool Show. It means swinging from a trapeze. Walking on stilts. Riding a unicycle … And that’s not counting the fortune-telling tent, the tombola or the choir sing-along.

Unfortunately, Harry and his family can’t really do any of those things. Aunt Susan has no idea of the mayhem she’s about to unleash.