Concept: Uncharted in space
Humanity has been amongst the stars for untold generations. Moving from planet to planet is like taking a plane ride today.
The stars are littered with the remains of human civilizations, colonies, and history. So much history that in fact, there are things lost to time, buried, or otherwise misplaced in the cosmos.
The hero of this story is a treasure hunter and/or anthropologist making her way through the cosmic history of humanity. A sequence of events leads her on a quest to find… well, something. Something important, maybe mystical. Something thought to only be legend or fiction, but in truth actually exists, hidden away behind clues and guarded by deadly protections.
Think Nathan Drake or Indiana Jones… but in space, Star Wars style.