In 2012, the end came as expected. Not a meteorite, not a flood, but a nuclear bomb. After a seventy-two-hour nuclear explosion, nuclear weapons around the world mysteriously failed, and human civilization returned to the gunpowder age. Animals on the earth began to mutate - giant rats, vine snakes, bone-splitting dogs... They pulled humans off the top of the food chain. The survivors used flesh and steel to build city walls, which are the last line of defense for mankind.
Lin Shen, a low-level scavenger in No. 7 Underground City, saw his father die trying to save him when he was seven years old. He vowed to survive at any cost. But in an apocalypse where human hearts are more dangerous than mutant beasts, living itself is a huge gamble. When the totalitarian rule of the shelter approached the bottom line, and when the last affection around him was crushed, the young man who was most afraid of death made a crazy decision - to escape to the surface.
Written by a child.