Sophie loves camp - except for all the creepy-crawlies. Getting trapped in the tent with a Daddy Long Legs is terrifying, and spiders make her scream. It's so embarrassing. But then a mysterious compass transports her to a fiercely hot desert, where Bear Grylls, her guide, is waiting. The sun is beating down, and together they must trek to find water and overcome the dangers lurking in the dunes...