In the future, human beings are facing an unknown crisis, and animals (including human beings) mysteriously transform into monsters. These monsters will attack all living things crazily, and human beings begin to struggle to survive. However, as time goes by, monsters become stronger and stronger, and human beings enter the refuge Era. Decades later, there are only 200 million human beings left in the world, monsters are about to launch a general attack, and the end of human beings is just around the corner! In the end, human beings decided to use the final plan, but the price was the complete extinction of the remaining 200 million human beings. Responsible Guo Anyi, the leader of the scientific research base, after the implementation of the plan, was reborn back to the time when he was eighteen years old. At that time, he had just graduated from university, and the Reading Pavilion was preparing for the postgraduate entrance examination. The doomsday had not yet come to light, and human society was still stable. The world, he believes, his rebirth is not accidental. Decades of technology catalyzed by the war is in his mind, and he decided to have a touch with the future doomsday, because - human beings will never surrender!