The year is 2013. The world as we know it has come to an end. Society has completely broken down. The Scourge, an engineered virus released upon the world by terrorists, was intended to send the West back to the Stone Age by turning their citizens into crazed mutated beasts. The infected roam the world and outnumber the few left alive. Pockets of civilization hole up around the planet trying to survive and weather the storm. Courageous and highly-trained groups of mercenaries explore the deadly ruins of civilization to salvage critical supplies and provide defense for these settlements. Their future is in your hands, Mercenary.