After Ergal managed to convince the elves that Tieru had gone insane, seeing demons everywhere, Tieru had to leave Irollan. He eventually traveled to the islands, making his home here. After falling in love with Isabel, Agrael traveled to the islands to find Tieru and gain his help in fighting Kha-Beleth. The druid performed the Rite of True Nature to cleanse Agrael of demonic influence. Agrael stayed with Tieru for a time, studying under him.