This quest will become available when you reach lvl 20 (thanks to DE4N MUFC for sharing this information.)
Story related.
When you start the game you will get a Quest where you have to listen to the overseer radio.
When you do, it will reward you with a new Quest to seek out the overseer. It will be marked on your map.
As soon as you Talk to the overseer the achievement will unlock.
Edit: The achievement may unlock when you enter The Overseers house (thanks to Astral Array)