Princess Celestia and Princess Twilight Sparkle travel to the Griffon Kingdom to meet the Griffon King. They seek to negotiate a formal treaty, but past mistakes, even millennium old, may make an alliance impossible.
Queen Chrysalis recounts her life and the events that led up to the invasion of Canterlot during the wedding of Captain Shining Armor and Princess Cadance.
When the deposed king of the Diamond Dogs is brought before the court of Celestia, the story he tells is far too much to believe. For if it is true, the Equestrians' conquest of his nation has been a terrible mistake.
Thirsty for vengeance against Queen Chrysalis, Shining Armor leads an army south to deal with the Changelings. Prince Blueblood schemes for absolute power in Canterlot. And in the black north of Equestria, an ancient terror threatens to destroy all.