A magical mishap results in Twilight being shunted across the dimensions to the land of Nirn. Though overjoyed to have finally returned to Equestria, the scattered reports she kept and delivered to Princess Celestia indicate that not everything went smoothly in the years she was stuck there. (For the Friend-off, based [very] loosely on http://okiedokielowkey.deviantart.com/art/Moon-and-Star-01-259866995. Sorry)