You are invited to trade places with an Arcane Mage, bested only by The Royal Sisters and Twilight Sparkle. With no apparent downside, you accept. Once in Equestria, the real reason a pony was so eager to trade becomes apparent. It quickly turns into a race against time to convince Twilight and the Princesses that the pony you are now is not the one who deserves their wrath. Otherwise your stay in Equestria will be short. Six feet of rope short.