The Tiste Invasion was the arrival of the Tiste Edur and Tiste Andii to the Malazan world long before the evolution of humans. The Invasion was a result of the sundering of Kurald Emurlahn (home of the Edur), and the chaos that erupted in Kurald Galain when Mother Dark turned her back on her children, the Andii. The Invasion was opposed largely by the K'Chain Che'Malle, and resulted in a number of pitched battles between the Che'Malle and the allied races of Edur and Andii.