In 2077, a scarlet haze covering the world suddenly came without warning or source.
Excessive inhalation of red mist can cause cell distortion, madness, and death;
Plants and animals mutate into extremely aggressive aberrations;
90% of the human race died, and a few survivors developed adaptive physiques that could resist the red mist for a short period of time;
Electricity, the Internet, the government, and the law completely collapsed, and modern civilization returned to zero.
