There are no zombies or mutations. A global solar magnetic storm destroys all electronic equipment, power systems, and communication networks, and modern civilization collapses in an instant. Traffic is paralyzed, factories are shut down, food is cut off, water sources are polluted, law and order have completely disappeared, cities have become chaotic battlefields, and rural areas have become the focus of competition for resources. There is no supernatural power, only the most primitive survival instinct of human beings. Hunger, cold, disease, and violence become daily life. The good and evil of human nature are infinitely magnified. Trust becomes the most luxurious thing. The protagonist accidentally triggers the system and starts a journey all the way.