Eternity is something that can never be reached. Even Equestria's princesses won't live forever. The end, however, comes much sooner than anypony expected.
Twilight finds an old map and goes off in search of a lost town; a town that holds the best kept secret in all of Equestria. Her discovery puts her on a collision course with Celestia and Luna who have shared a secret since the founding of Equestria.
Equestria is threatened by a deadly alliance of Gryphons, Minotaurs, Horses and Changelings, an alliance that was supposedly created to maintain peace in Equestria. But Celestia is no fool. She knows that a war is coming, a war that cannot be stopped