Mark Wells only bought an old mirror, so why did he now have hooves, wings and green fur? And where was he? Maybe this great and powerful princess could tell him?
After the second invasion of the changelings, the nobility of Canterlot are in an uproar. In a desperate attempt to keep the peace Twilight has to make a decision, on which depends the fate of Equestria.
As a time of great prosperity comes upon the changeling kingdom, King Thorax invites some of his pony friends to attend their Gourd Fest. Twilight, ecstatic at this chance to study the changelings' customs, knows not how its outcome will truly be...