The story, you've heard it before surely. Long ago there were two Alicorn Princesses who ruled the lands of Equestria.
One presided over the day, and the over bore vigilance for the night. They were wise and humble, and they loved everypony very much. But, love and tolerance could not stop the uprising. Ponies, as foolish as they are believed they could govern themselves, that they, dispite their fallible nature, could provide fair, just, and harmonious treatment of their peers.
The Princesses knew otherwise. They knew, better than anypony, that power corrupts. And, unlike themselves the ponies of their lands were prone to corruption, easily persuaded by fear and greed, that should the ponies govern themselves they would, in time, bring war, death, amd unending hardship upon themselves.
The two agreed that it would be best for everypony, all future ponies, to fight this rebellion.
If it weren't for Supreme Commander Sombra, the war would have been extremely one sided. He knew magics that rivaled the old gods, though dark as it was, it was the only choice.
The ponies were victorious, the princesses fled and Sombra became king. He elected councils to divide his power across the budding "republic".
It was a lie. Sombra's courts and councils bow to his will, the public none the wiser, but this is not important. What is important is his beautiful daughter Nightingale, trained in magic from birth, skilled in magic far beyond her years. He hopes she will take the throne if he passes.
What he doesn't know, is that for 19 years, the Princess of the night has walked with her in her dreams, shown her the beauty of the old world, and the nightmares of the new.
She will do as the Princess has told her. She will restore harmony and balance to her world...
Through friendship...
Tonight, she leaves the confines of Castle Shadow Scar, to seek a new life for herself, and prepare a new life for her people.