Princess Luna, and Nightmare Moon was saved by the Elements of Harmony. Now Nightmare moon is her own pony a filly just a year old, when the Changelings attack Canterlot. Nightshade has only one thing to say to them... "MINE!"
In another universe, Luna has been restored thanks to the Elements of Harmony. She wasn't alone, with her appeared a small 2-month-old royal purple alicorn filly. Nightmare Moon reborn as Luna's Daughter. These are short stories in that universe.
Who is Nightmare Moon without Luna? Without the drive to bring eternal night, her jealousy at her sister? Without Luna's influence could there be a chance for the Nightmare to be redeemed? In this Universe Equestria about to find out the answers.
You know the story, Sunset Shimmer lost in another world, falling into anger and rage. Her plan to steal the Element of Magic and get revenge. A little nightmare filly might have other ideas.