11-year-old Mouse is travelling to see his grandparents with his mother and sisters. But it's snowing, and visibility is bad, and the car goes off the road, and crashes. Mouse is thrown from the car. When he wakes, he's not in his world any more. So begins a quest to find a castle in a world of wonder - a world of monsters, minstrels, dangerous knights and mysterious wizards; a world of terrifying danger but also more excitement than Mouse has ever known. A novel about the power of stories.