As long as you breathe

After a Mass Extiniction event driven by unknown extraterrestrial invaders, Technological remnants of the past ravage the world against residual products of alien occupancy. Humanity has been forced to live underground for the past centuries in poorly made cities and forage for resources in warzones in desolate regions. Aidan has been in the slums of the first underground city for his life desperately trying to survive. Until one day, he steps to the outside world.