In 202X, while drilling for cores deep in the permafrost, a scientific research team discovered an unusually well-preserved body of a woolly rhinoceros in a sediment layer about 120,000 years ago. For the first time, unknown virus particles were isolated from his brain tissue and spinal fluid. It sleeps in extreme cold, but can wake up in low temperatures. Faced with this "Pandora's Box" from the Ice Age, humans made a fatal misjudgment based on limited cognition - classifying it as a research object with "huge potential for neurological repair" instead of an extinction-level threat that must be permanently sealed. When infected people engulf the streets like a tide, when the gunfire of emergency response forces flickers like candles in the wind in the sea of people out of control, when the lights of the city are extinguished in pieces in the silent bite, how can we find a second chance for mankind in this doomsday on the ruins of a collapsed civilization?
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