(This is an OC story)

Somehow, the spirit of Nightmare Moon is able to drain Princess Celestia's powers and destroy the Elements of Harmony! The mane six must seek out Princess Luna's first Coltfriend before she was banished to the moon. A martial master named Ninja. But will the power he posseses be enough to stop this monster now that she's her own pony and has the Alicorn amulet?!