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?
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.
Twilight’s trip to Earth and friendship with the humans brings new friends and enemies to her peaceful world. With the specter of war hanging over them, Equestria will have to form an alliance like no other to fight the menace from the void.
Equestria has been defeated. Nightmare Moon has won, and Princess Celestia has been banished to the moon. The ponies that fought for Princess Celestia now find themselves left with a choice: swear fealty to the Princess of the Night, or die.
Princess Celestia has done everything she can to save Equestria from the Changeling Lands. Everything, except taking that final step... [An Equestria at War story]