From the publisher:

During the days of Old Earth, man conquered the land. Then the terrible cataclysms came, wiping out civilization as we know it. The land is now filled with all sorts of hazards as it attempts to avenge itself upon man--rogue machines, plagues, beasts, and even man himself. Survivors explore and eke out a meager existence among the wastes and blasted lands. EarthAD 2 includes cybernetic beings, cyborgs, mutants, plague carriers, sentient animals, savage beasts, exotic abilities, makeshift transports, ready-to-play scenarios, reference sheets, and numerous character templates