The Legion's invasion of Azeroth was defeated at much loss of life, and the demonlord Archimonde was slain. Yet Azeroth was not safe, as they faced threat after threat, from the reopening of the Dark Portal to the awakening of the Lich King, the re-emergence of Deathwing, Aspect of Death, and finally to a bitter war between the Alliance and Horde which has only just been resolved. The Draenei Prophet Velen, however, has had a vision of death, and has gone to the paladin Tirion Fordring with a warning of a possible Legion invasion.
The Prophet's fears were realised when portals to the Nether opened above Stormwind, Orgrimmar and the Maelstrom, and hordes of demons poured out, hellbent on destruction. The Alliance and the Horde fought desperately to survive, while the Silver Hand reacted decisively, striking at the Maelstrom with all their might. Joined by the Priestesses of Elune, they managed to carve a bloody path through the demons and shot through the portal to battle the threat at its heart. Emerging on a hellish world where the laws of physics did not apply, the Silver Hand set about establishing a foothold.
Meanwhile, the Legion's forces had retreated from Azeroth to defend their world. The Alliance and Horde seized this opportunity, and followed them through the portals. Now, the four factions must battle for control of the portals, for whoever controls them, decides the fate of Azeroth...
