As Princess Luna succumbs to her internal struggle, her torn emotions spiraling her down a path of evil, Star Swirl the Bearded desperately works to set things right once more.

The course of time has been changed... and as the war of the sisters begins, will Star Swirl's involvement change things for the better, or has the mage doomed Equestria to an even more terrible fate?

To right a wrong of long ago, Princess Celestia and Luna use their magic to return an exiled pony during the spring starfall festival.

Loathing. Fear. Jealousy. Luna's dark emotions take hold, and through her advent of madness, the war of the sisters begins.