Revenge of the Dark Stone
A secret map leads The Jewel Riders to an old wizard's castle and the final Enchanted Jewel that will return Merlin and goodness to Avalon. But Lady Kale sneaks into the Crystal Palace and uses her Dark Stone to create "antimagic." Soon she controls all of Avalon. When The Jewel Riders return, they discover their magical powers have vanished. How can they save the kingdom?
Full Circle
To recharge their jewels, The Jewel Riders reunite in the sacred Friendship Ceremony. They find Merlin, still trapped in a bubble by Lady Kale. But Kale cannot control the Crown Jewels and in a fight to the finish, Merlin captures Kale inside her own "antimagic." Unfortunately, Merlin's magic staff is destroyed and The Jewel Riders must find a way to bring him home.