Ny'alotha, the sleeping city, has awakened. For the first time in millennia, N'Zoth sits on his throne within the Black Empire. His armies flood from their dark halls, once again wreaking havoc on Azeroth. As the world shudders from these invasions, a desperate plan is hatched. Champions from the Horde and Alliance are gathered to face this ancient enemy within his own realm for one final confrontation that will decide the fate of the universe.