A fortune teller named Esmerelda and her mysterious cat use the Fortune Jewel to tell people’s fortunes. When the Jewel Riders have their fortunes read, a dark future is revealed to Gwenevere that tells of the fall of the Crystal Palace and the rise of Morgana to rule Avalon. Gwen and her friends must get this magic jewel to the Jewel Keep and out of Lady Kale's and Morgana’s hands. However, when they fall into a magical trap of Kale, the cat's secret is revealed, being really the ancient wizard Derreck who has lost his human form when he was tricked by Morgana. Will Esmerelda and her cat decide to give the jewel to the Riders, or to Morgana?