At the beginning of the 22nd century, various countries were in a period of prosperity, national income was higher than the national average, and citizens could be said to be in a period of "sleep and relax". Some foreign countries have invested some resources in drug research and development technology, hoping to develop antidotes to the disease. Since research and development of drugs can bring more considerable profits, more and more countries are rushing to develop drugs to combat different diseases, and the most effective ones are "anti-cancer drugs". Since the advent of anti-cancer drugs, the number of patients dying from cancer in various countries has been greatly reduced. In view of this, some major countries have become even more crazy. In addition to setting up specialized research and development of anti-cancer drugs, they have also secretly established pharmaceutical groups responsible for developing some drugs with "different efficacy" in the hope of increasing life expectancy. However, a pharmaceutical mistake left an indelible mark and brought a major disaster to human history. Joy, joy, and peace are no longer in the world. Darkness, fear, and despair have invaded the entire earth overnight. Corpses slowly climbed up from the ground and from the dirt in the mortuary. They had no wisdom or thoughts. Foraging is their primitive instinct. The living people scrambled to escape, but the more chaotic it was, the easier it was to become "food" for the corpses. Studying, working, fame and fortune are no longer important to living people, because the only focus at present is: survival. Seeing their compatriots being drowned one by one among the snarling dead bodies, the remaining survivors were helpless and could only hide everywhere. But as the number of dead increases day by day, the chances of survival of the living decrease every day. The government has decided to stop rescue operations. Can the last survivor escape, or will he become "food" for the dead?