The Dust of the Wasteland

That was the day the world changed. Countless black spheres suddenly appeared in the sky. As people curiously took photos and discussed them, they never imagined that this would be their last glimpse of the blue sky. After that, the sky turned a dull gray, and people on the ground would struggle to survive amid despair, pain, and fear. Could humanity ever return to the world it once loved and see that blue sky again...