The Little Sister: Mia wants to spend her summer vacation at a riding school in the Tyrolean Alps, but her room is no longer available. So she begins to search for accommodation, where she meets Sara. Back in Centopia, Mia witnesses how Oncha's mother Lyria gives birth to the unicorn foal Kyara. Gargona also witnesses the birth of the foal and immediately reports it to Lord Drakon. The Toxic Keepsake: Mia has spent the night in the stable when Sara's mother comes in with breakfast and informs her that she will be taking Peppino back to the riding school. Meanwhile, in Centopia, Lord Drakon introduces Gargona to Dax and his four Hoppers. A plant around Panthea's old palace is cursed and transforms into the evil Night Vine, which takes control of Centopia and thus over the elves and unicorns.