Head Rider Willow must confront her past when the Unicorn Riders travel to Arlen to deliver a healing elixir to her dying uncle ― an uncle she hasn’t spoken to in years. But when old friendships are betrayed and the town is attacked, the Riders and their unicorns must help the townspeople. Can Willow find the courage to forgive her uncle for past wrongs and help him save Arlen?

Peter becomes determined to get his room back after he is forced to give it up to his grandfather