Once upon a time, in the magical land of Equestria, there were two regal sisters who ruled together and created harmony for all the land. To do this, the eldest used her unicorn powers to raise the sun at dawn; the younger brought out the moon to begin the night. Thus, the two sisters maintained balance for their kingdom and their subjects, all the different types of ponies.
But as time went on, the older sister became full of greed. The ponies relished and played in the day she brought forth, but shunned and slept through her younger sister’s beautiful night. One fateful day, the elder unicorn refused to lower the sun to make way for the night.
The younger sister tried to reason with her, but the bitterness in the old one's heart had transformed her into a wicked mare of darkness: Nightmare Star. She vowed that she would bathe the land in eternal sunlight.
Reluctantly, the younger sister harnessed the most powerful magic known to ponydom: the Elements of Harmony. Using the ma