The Jewel Riders journey to the enchanted lands of the unicorns to learn about the mysterious secret of their magic. The unicorns, the most magical animals in Avalon, are in danger. The unicorn Queen is missing, kidnapped by Morgana in her quest to obtain the Unicorn Wizard Jewel. Moondance, daughter of the Queen, must go to the magical place and perform a series of tests to determine whether she should become the new unicorn's Queen. This would mean that Moondance can no longer be with the Jewel Riders and leave Fallon. Moondance must choose whether her loyalties are with the unicorns or with her best friend, Fallon.