Discord is having a gloriously unlucky day. First he accidentally got sucked into a human high-school version of Equestria. Then he got stuck there after blowing up the portal home. His life hasn't been this chaotic in ages! But a burst of reverse future memory is about to convince him to destroy this new world—and the power of Harmony seems to be on his side. Against those odds, it will take the full wit, courage, and magic of Celestia and Luna to save the day. No, not the Princesses. That would have been simple.