Argus is the original home of the Draenei before the Burning Legion arrived and corrupted Kil'Jaeden and Archimonde. The Draenei were forced to flee their home world and move to Draenor, home of the Orcs. On Draenor, the Orcs and the Draenei tollerated one another until the Burning Legion came once more and corrupted Gul'dan. Both races, the Orcs and the Draenei sought sanctuary on Azeroth.
The fight against the Burning Legion has led both the Horde and the Alliance back to the start world, Argus. It is time to take the fight to the home world of the Burning Legion. The planet is virtually destroyed but for the Mac'aree section but everywhere else is completel unrecognisable from the time when the Draenei lived there.