Billions of humans have uploaded themselves into a virtual existence, leaving the physical world in a crumbling ruin. Cities have become tombs of unimaginable danger, only on a few lone wanderers dare to explore their crumbling ruin for lost treasure of lost civilization.
They are dangerous men.
They are the Grave Runners.
1Darren Walker remembered a documentary where scientists guessed what the world would be like if the human race suddenly disappeared. After living in that world for a decade, he had to admit they got it mostly right.