Once upon a time, there was an average, everyday pony, whose special talent was being magical. She lived her life alone in secret studies until one day, she moved into a new town, made five very special friends, and saved the world. She only failed when it was necessary to advance the plot or show character development, or when the author had some issues she needed to work out. Soon, the universe realized how perfect she was, and she was turned into an alicorn and named princess.
Celestia can't stop writing stories about her, and Luna is getting worried.