Alien species invade, sound and light become a signal to kill, and monsters that look like humans but are not human are slaughtering the world with sharp claws and fangs. Wang Feng, his wife Zhao Ya, and his children Xiaoyi and Xiaobao struggled to survive in the dead darkness, hiding in an underground fortress to survive. But misfortunes followed one after another. The daughter was swallowed up, the son had a broken leg and was seriously injured, and the wife had an unexpected pregnancy. Despair and hatred intertwined. In the desperate situation of doomsday, the family faced the ultimate cruelty of survival and the tearing of human nature.
