Twilight Sparkle, apprentice to the great Archmage Celestia's life is thrown into disarray when her master graduates her, gives her an apprentice of her own, and sends her off to some nowhere town all in one day.
While touring Canterlot with her new magic act, the Great and Powerful Trixie finds herself invited to the royal wedding at the castle. But who's getting married? Why did they invite Trixie? And why are those ponies from Ponyville attending?