This page explains how to complete the level 80 post-Shadowbringers quest "Nowhere to Turn".
This quest is available if you have completed the quest Good for the Soul.
Starting the Quest
Talk to Alphinaud in Eulmore to begin the quest.
Search for Dulia Chai
Go to the north part of the orange circle on the map and talk to Dulia-Chai to complete the quest. There will be a cutscene.
Next Main Scenario Quest
After you complete the quest, talk to Alphinaud in Eulmore to accept the next quest: A Notable Absence.