With Twilight and Ruby Sparkle settling into their new positions as rulers, they must oversee the transition of the bat ponies to their new home. But the next Shepherd will soon appear, threatening not only Equestria, but the other kingdoms as well.
With King Sombra gone, is Equestria truely safe from harm? Or will another foe as old as the Crystal Kingdom itself appear now that the dark unicorn's position of evil is vacant? What new danger will threaten the land and the Elements of Harmony?