The Istyuli Plains were once the breadbasket of Eärwa, teeming with villages, towns and farmsteads feeding the great nations of Kûniüri, Sheneor, Akksersia and Aörsi. Millennia before that they formed part of the Reach or dominion of the Nonman Mansions of Nihrimsul and Siöl.
During the First Apocalypse, those nations were laid low by the teeming masses of Sranc unleashed by the No-God. Since the end of that conflict the Sranc have remained in firm control of the plains. The Great Ordeal of Anasûrimbor Kellhus marched onto the Istyuli Plains in 4132, planning to breach the armies of Sranc to reach and destroy fell Golgotterath.