After you get some much-needed rest and have an odd dream, you speak to the Manager of Suites.
This quest is available if you have completed the quest More than a Hunch.
Starting the Quest
Talk to the Manager of Suites to begin the quest.
Head to the Ocular
Go northwest to the Aethernet Shard and use it to go to the Dossal Gate. Go east up the stairs and talk to the Crystarium Gatekeep. Say Yes to enter the Ocular. There will be a cutscene. This one is important, so it is recommended to watch it either now or via the Unending Journey in an inn room.
Speak with Alphinaud in Wright
Teleport to Wright and go to the quest icon on the map. Talk to Alphinaud to proceed. There will be a cutscene.
Speak with People En Route to Gatetown
Go northeast to the western orange circle on the map. Go to the western part of this orange circle and check on the Delirious Youth.
Go southeast to the southern part of the western orange circle and check on the Agitated Man. Defeat the two Entranced Citizens who attack.
Go east to the next orange circle on the map. Go to the eastern part of the orange circle and talk to the Euphoric Youth.
Speak with Thancred
Go south to where the orange arrow is pointing in the minimap. Talk to Thancred to complete the quest.
Next Main Scenario Quest
After you complete the quest, talk to Urianger to accept the next quest: A Feast of Lies. There will be a cutscene.