Zombies are rampant and civilization is destroyed. The protagonist Chen Lin awakened the war merit system and won the Snow Leopard Commando at the beginning. When others were fighting for a piece of bread, he used the system to exchange tanks and artillery to form a steel army. Warlords come to seize territory? Rocket artillery cover bombing! A million zombies siege the city? 99A cluster push! Chen Lin led the heavily armed synthetic brigade to crush the apocalypse, reestablishing order with iron-blooded tactics, and finally became the overlord of the apocalypse.