Rainbow Dash Princess of the sky, is the youngest of Empress Celestia’s two daughters and the runt of the family. When her fillyhood friend and protégé of her mother, the highborn unicorn lady Twilight’s concern for the myth of Nightmare Moon, and her imminent return is brushed of by her teacher, she is asked to attend the summer sun celebration in Ponyville along with the young alicorn as its overseers.
But is Celestia really the benevolent monarch that see appears, and what is the truth about her dark sister, the mysterious princess of the night?