The Burning Legion has been defeated, and eastern regions of Kalimdor are now shared by two nations: the orcs of Durotar, led by their noble Warchief, Thrall; and the humans of Theramore, led by one of the most powerful mages alive -- Lady Jaina Proudmoore. But the tentative peace between orcs and humans is suddenly crumbling. Random attacks against Durotar's holdings suggest that the humans have renewed their aggression toward the orcs. Now Jaina and Thrall must avert disaster before old hatreds are rekindled -- and Kalimdor is plunged into another devastating war.