 The Alliance, pagan night elves, and divided Horde are waging war against each other once more. Separated by appearance, religion and culture, old hatreds bring these forces against one another. Meanwhile, the undead are spreading throughout the world, yet nobody knows why. In an untimely turn of events, a vast, demonic army of Hell-spawned demon warriors, the Burning Legion, have returned to destroy the land of Azeroth after having been banished for 10,000 years. Only by looking past their ancient hatreds for each other and standing together against true evil can the citizens of the world defeat the Burning Legion.