This page explains how to complete the level 80 post-Shadowbringers quest "The Way Home".
Requirements
This quest is available if you have completed the quest Old Enemies, New Threats.
Starting the Quest
Talk to Krile in the Lochs to begin the quest.
Speak with the Crystal Exarch
Teleport to the Crystarium and use the Aetheryte to go to the Dossal Gate. Go east up the stairs and talk to the Crystarium Gatekeep and say Yes to enter the Ocular. Talk to the Crystal Exarch to complete the quest. There will be a cutscene.
Next Main Scenario Quest
After you complete the quest, talk to Alphinaud to accept the next quest: Seeking Counsel.