Having the desire to finish what Nightmare Moon had started, a unicorn by the name of Teddy comes to Ponyville in hopes for his multiple plans. While going behind his newly-made friends' back and building a weapon, he attempts to adjust to a social life. His broken mind gets in the way as he messes up relationships, and his obsession is pushing him more and more to insanity. It seems to be a classic story of a villain trying to overpower the mistress, when the knight in shining armor comes to save the day, but is it?