Det er ikke noen store forandringer, bortsett fra nytt felttog for både orker og mennesker, som inneholder ny historie, nye oppdrag og en serie nye helter. Utvidelsespakken er inkludert i WarCraft II: Battle.net Edititon.
After destroying the mystic gate into Azeroth, the Humans discover that the rift which allows the Orcs passage into their world still exists. Human forces must now venture beyond the Dark Portal into Orcish lands to put an end to the threat of yet another invasion by the hordes. At the same time, Ner'zhul- Warchief of the Shadow Moon clan- has seized control of the Orcish hordes of Draenor, and is gathering his forces in an attempt to open portals to other worlds, while bringing the nations of Azeroth to their knees.