Five years ago, we spent almost everything to save 12 cities in the central region. However, it is still unable to resist the ravages of pollution sources. A large number of humans are polluted and become pollutants.
Five years, 27 major battles, countless small battles, and tens of millions of deaths.
During the war, humans discovered that some humans could retain their consciousness after being polluted. Humans began to use this semi-pollutant. Coupled with technological innovation, humans gradually gained the ability to fight against pollution sources.
Five years later, the pollution war began to calm down, but the source of pollution is still strong, and pollutants and humans began to prepare for the final war.
Purpose: World peace