Determined to settle the harsh, sun-scorched land of Durotar, Thrall's reborn Horde swelled its ranks, welcoming the undead Forsaken alongside its orcs, tauren, and trolls. Across the world, dwarves, gnomes, and the ancient night elves rallied to a revitalized Alliance under the banner of the human kingdom of Stormwind. But when Stormwind's king, Varian Wrynn, mysteriously vanished, Highlord Bolvar Fordragon ruled as Regent — his reign secretly poisoned by the mind-controlling schemes of the black dragon Onyxia, who masqueraded as a human noblewoman. As heroes dug into Onyxia's plots, long-dormant enemies stirred in lands across the world, threatening Horde and Alliance alike.