Ruby Moon arrives in Canterlot looking for a quality education. She finds ancient spirits, haunting dreams, and more magic than she ever expected.
Princess Luna was looking for a student. She confronts an unknown part of her disturbing past, and learns of a link to the origin of magic.
An unknown unseen force wants something from Ruby, and mysterious events fill the castle, apparently linked to Ruby's dreams. Princess Celestia is concerned, but agrees when Luna decides to handle them alone but her new student.