The Tehranai is a cult that worships a construct they found in a underground cavern. They worship this construct, The Rock of Ages, and believe it is a demigod and are trying to reactivate it. The Tehranai believe that the construct requires a substantial amount of a substance called orichalcum to be reactivated.
The Tehranai are opposed by the Wardens who are attempting to prevent the Tehranai from activating the construct by collecting four relics called the Relics of the Selenitia. These relics are believed to be the key to destroying the Tehranai's construct.