Just Flew In From The Graveyard - Final Fantasy 7 Remake

After completing a nuisance in the Factory, it will be unlocked.

West of the Pillar plaza, Talk to Gwen.

To get a key, go to the abandoned Talagger Factory.

This is the key location.

To get in, you will need to open the gate with levers.

Defeat the Cerulean Drake, after opening the gate.

To complete the mission, return to Gwen.