'Sometimes extraordinary events begin on very ordinary days. This was the case for Jasper Jett. It was the beginning of his long summer holidays. Christmas had come and gone and Jasper had settled into his own routine, no longer governed by homework early mornings or any of his usual school activities.' One night, late in the summer holidays, eleven-year-old Jasper hears a noise. A breeze fills his room, an uneasy feeling overcomes him and he steps out into the night to investigate... He never thought he and his best friend Sam would go on an adventure under the surface of the earth. There they find a magical world where your body doesn't exist and crystals are more than just pretty rocks. It's a place with much beauty, but also a dark secret about a very shady character... can Jasper help save this world, as well as his own? Jasper makes new friends without age, finds his own power and learns that friendship, family and believing in yourself are the most valuable jewels there are.