The goblins have done dangerous experiments in the lands that the Burning Legion sundered centuries earlier. The Cenarion Expedition has set up biospheres in certain areas of this twisted land to help preserve the Wildlife that thrived in this part of Draenor before it eventually was shattered. Even worse, someone has gained control of the Dranei prison at Tempest Keep who has plans darker and far more sinister than those ever conceived by the Burning Legion. Found out about the quests, items and other secrets of the zone in this Guide to Netherstorm. You'll also find out that it ties in slightly to the plot for Cataclysm.