The sequel to Rise of the Dragonking of the "Prince of the Changelings" trilogy.

War has come. Silent Wing must gather those his father commanded him to bring halfway around the world where the scars of the past are forever written upon the very sands. As he, Luna, and members of the Mane Six travel in hopes of saving Twilight Sparkle, Star Journey and Atalanta, Celestia and Chrysalis are left to lead their small forces against an overwhelming foe.

Discord remains missing, his reasons for not showing for the past fifteen years a secret.

Flamespyre sets his eye upon Twilight Sparkle and Princess Luna for reasons that can only be for his own twisted pleasure. He begins to slowly reveal his plan for the world. His target is the very magic through all the land, air, and sea. If he can but wrest control of it for himself and deny it to others, then he would indeed be unstoppable. But how can he do this?

He has a name for it: Oblivion.

Another had the very name once, five thousand years ago. One thousand years ago, it stirred a certain Nightmare against her own sister.

The chaos of war shatters a thousand years of peace as the madness of a monster spreads his evil. No place is safe. Not even the mind of Princess Celestia. All hopes rest upon the small form of the adopted son of Queen Chrysalis, Silent Wing. It could very well destroy him.