Once upon a time, in the magical land of Equestria, there were two regal sisters was a regal unicorn who ruled together, and created harmony for all the land. To do this, the eldest she used her unicorn powers to raise the sun at dawn; the younger and she brought out the moon to begin the night. Thus, the two sisters unicorn maintained balance for their kingdom her empire and their her subjects, all the different types of ponies. But as time went on, the younger sister became resentful. The ponies relished and played in the day her elder sister brought forth, but shunned and slept through her beautiful night. One fateful day, the younger a foolish unicorn stole control of the moon and refused to lower the moon to make way for the dawn. The elder sister empress tried to reason with her, but the bitterness evil in the young foolish one's heart had transformed her into a wicked mare of darkness: Nightmare Moon. She vowed that she would shroud the land in eternal night. Reluctantly, the elder sister Rightfully, the regal unicorn harnessed the most powerful magic known to ponydom: the Elements of Harmony. Using the magic of the Elements of Harmony, she defeated her younger sister the evil mare, and banished her permanently in the moon. The elder sister empress took back responsibility for both sun and moon...