With her sister back and her niece's wedding not far off on the horizon, Celestia finds a strange letter in her room. A letter from a self-proclaimed Prince of Changelings, and he's asking for Equestria's help.
Well, I'm not much of a brony as I don't like the show, but I greatly respect the fans and their work. I often wish the fanbase of some other franchises were as talented and ambitious as the bronies.