When the "Annihilation" virus tears apart civilization, the world falls into a double desperate situation - the infected turn into bloodthirsty rusters, and the electromagnetic pulse destroys modern technology. Lin Chen, a student in the Department of Mechanical Engineering, woke up in a bloody classroom and found that knowledge has become the last weapon.
He led survivors such as Su Xiaowei, a top student in the medical school, and Zhang Meng, a warrior in the sports academy, to transform the university training center into a steel fortress. In the ruins where human nature and bestiality clash, they repair abandoned machinery to fight mutant monsters, crack electronic debris and search for military signals. However, they attract the covetous attention of security captain Wang Qiang, who believes in the law of the jungle.
When the homemade crossbow arrows collided with the homemade bombs, and when the first-aid bandages could not cover the moral wounds, Lin Chen was forced to draw survival rules on the engineer's drawings: using gear transmission to replace electricity, using hydraulic traps to resist the tide of corpses, and using cold machinery to calculate the temperature of human nature. And are the coordinates of the shelter that come intermittently on the radio a beacon of hope or the entrance to a deeper hell?
