Ceana needs to go to the Isles of Umbra for her research, and asks you to question the Yellowjackets to find out why access to them is prohibited.
This quest is available if you have completed the quest It's Probably Not Pirates, and have reached level 42.
Starting the Quest
Talk to Ceana in Aleport in Western La Noscea to begin the quest.
Question the Yellowjackets
Go north up the stairs and drop down onto the awning, then drop down to talk to Q'ahnebb beneath the awning. Then jump down and go west to the statue near the Aetheryte, and talk to Firkmann. Then go west to the ramp, and go south down it. Then go west when you can, and finally go north through the gate and talk to Alza Gamilza.
Report to Ceana
Go to the east side of Aleport to return to Ceana. Talk to her to complete the quest.
Next Main Scenario Quest
After you complete the quest, talk to Ceana to accept the next quest: Representing the Representative.