The Dragons Tyr
The history of Athas varies in its depth according to the source of the telling. For the most part people rarely know about more than a generation or two past. This is due in large part to the hoarding or destruction of historical documents by the Sorcerer Kings. There may be some on Athas who have a longer memory but it unlikely you will have this knowledge within your party to start with.
What you do know is that for as long as anyone can remember the Sorcerer Kings have ruled the Tyr region with an iron grip. Assuming positions of Dictatorship over each of the city states. Jealous of each others power they stand alone and often attempt to encroach on each others land. The people of Athas bow before these mighty Sorcerers knowing that to challenge their power directly is practically akin to a death sentence.
However recent history has dealt a savage blow to the Sorcerer Kings. They are no longer seen as the invulnerable entities of the past. Kalak, the Sorcerer King of Tyr has fallen. News of his death has spread through the land like wildfire. One of the immortal rulers has fallen to a group of mortals. This has tipped the balance of power and awoken in the people of the lands of Tyr a calling that has laid long dormant. They hear the call of freedom…