Ten British children go on the biggest adventure of their lives, learning how to take on the great outdoors under the watchful eye of the world's leading survival expert in the rugged mountains of Snowdonia in Wales. It is day nine and the team take on a treacherous challenge battling up raging rapids before spending the night in a cave, 2,000 feet up a mountain. Bear serves up one of the most unappetising of survival snacks - live earthworms!