When Lucidity sent a letter to Princess Luna asking to be her apprentice, she had thought that Luna would be more than happy to take her under her wing and teach her everything she knew about dream-walking. What she hadn't expected, however, was to be chased halfway across the dream realm by an irate alicorn Tartaurus-bent on destroying her. Now, trapped in a world she barely understands, Lucidity must confront her fears and fight her way back out of the Dreamscape, or die trying.