Earth Reborn

In 2065, the Earth is devastated by a global war, leaving the planet surface contaminated and uninhabitable. The political tensions and environmental collapse of the early 21st century, having never been resolved, led the world to an Apocalypse and forced the surviving populations to relocate to vast underground cities.
These ‘factions’ live in isolation for nearly five centuries, evolving independently and with no outside contact. There, each develops the culture and knowledge they took along with them.
Generation after generation, the survivors wait patiently while the planet recovers from the horrors inflicted on it by human civilization, hoping that Nature will give Man another chance to surface again and rediscover an Earth Reborn...
Unfortunately, it is as much in the nature of Man to conquer and destroy as it is to build, and this Earth Reborn may well suffer as chaotic and somber a fate as the one it endured at the hands of humanity 500 years earlier.