The dark forces of Evil are growing in Balinor. The Celestial unicorns who watch over the land are not pleased. They know that only the Bonded Pair, Princess Arianna and her unicorn, Sunchaser, can attempt to battle the darkness.

Princess Arianna and Sunchaser seek advice from the Old Mare of the Mountain. Upon her request, the two set out to reclaim the royal scepter--with its powers unknown to them.

The journey takes the pair through the Valley of Fear, the land where the dangerous black unicorns reign. But the royal scepter must be reclaimed by the princess if she is to win the battles in Balinor. Every moment counts.