Celestia is dying. Or at least it seems so. Afflicted with a curse that is destroying her very nature, she sets a plan in action. The Bearers of the Elements of Harmony will take the throne in her wake... Not that they know that yet...
The Doctor, Twilight, Rarity and Pinkie Pie visit their first alien world in the TARDIS; the planet of Qing, and meet its exotic inhabitants, the Quilin. But not everything in this near-perfect utopia is as it seems.
With her new apprenticeship under Nightmare Moon, Empress of Equestria and Queen of the Eternal Night, the orphan filly Twilight Sparkle plunges head-first into the conspiracies, secrets and intrigues of the Empire.