NightMare Moon

Intro This is Princess Luna but in her dark form. Under Princess Celestia's instructions, Twilight Sparkle goes to Ponyville to supervise the preparations for the Summer Sun Celebration and make some friends. However, Twilight is preoccupied with the impending return of Nightmare Moon from her thousand-year banishment. A narrator describes two royal sisters who ruled over the magical land of Equestria. The elder sister used her powers to raise the sun, while the younger sister brought out the moon at night. The younger sister became resentful because the ponies of Equestria relished daytime but slept at night. One night, she refused to lower the moon. She transformed into Nightmare Moon, a "wicked mare of darkness," and vowed to shroud Equestria in eternal night. Her sister used the Elements of Harmony to banish her to the moon, and took on responsibility for both sun and moon. The narrator’s voice changes to that of Twilight Sparkle, who reads that harmony has been maintained in Equestria ever since.