They've plotted, they've planned, they've waited. Now the time has come for them to enact their revenge and bring Equestria to its knees. This time the Fires of Friendship will be snuffed out.
Nightmare Moon won. Which isn't too bad since she's merciful(er than expected), is willing and wanting to learn of this new era, and is willing to compromise the "Eternal Night" plan if she can't make it work.
What is the story of the princess of the moon after her return to the monarch? How did she deal with the things that were unseen to the eyes of others? Was everything nice or was it a major disaster? Above all, did she made peace with herself?
After being defeated by Nightmare Moon, Twilight is transformed into a puppet of darkness. But when she starts to have flashbacks of a certain baby dragon, she realizes that there may still be hope for Equestria.
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.