Three of the four free realms have fallen to the dread march of the Lord of Morgonnun and his invincible army. Only the Kingdom, led by Avalind, stands in his way, and her forces are hopelessly outmatched. Yet a faint hope lingers. Mussa has survived, albeit hunted by his men. Larussi and Song, aided by the thief, Tammas, have escaped the ruins of Kurial and found the boy's long-lost sister, Strella.

All is set for an epic showdown that will determine the fate of everyone for all time. Should the Lord win, he will devour the living hearts of all four queens and make himself immortal as well as invincible.