Everyone loves a hero - don't they? So Mitch is on a secret mission to become a world-champion diver and make his family the most hero-worshiped, popular people in town. But as Mitch can't even do the doggy-paddle yet, is he bound to belly flop instead? And in Water Wings, Pearl and Gran each have a secret too. Bizarrely, Pearl's is hidden in the family freezer, while Gran's is buried deeper still. It's time for Mitch, Pearl, Gran and not forgetting Winston, the guinea pig, to face up to some hard home truths - with some silly and sad results!