A conflict breaks out between Amelica and the Russos. It escalates from an armed uprising to a local clash, and finally into a full-scale war between the two nations. In his madness, Amelica's incumbent president unleashes biological weapons. Animals are infected, and even some humans fall victim, plunging the whole world into chaos. Powerful animals attack people everywhere, and some of the more intelligent ones use guns and grenades to assault the military. After much deliberation, the United Nations builds more than a dozen Noah's Arks to take people to a planet called Miya, which is suitable for human habitation. But the Arks have limited capacity, so only a small portion of humanity can be evacuated. In the name of humanitarianism, the United Nations leads countries around the world in building shelters within their own territories and stocking them with ample supplies. More than a decade later, are there really still humans on Earth? Will Earth truly become a lifeless planet without humanity? The players will uncover the truth behind the whole affair, step by step. Why did Amelica act with such reckless abandon? What started this conflict? Why did it erupt in the first place?
