In 2250, mechanical Zerg swept across the earth, metal was devoured, cities were in ruins, and human weapons gradually became ineffective. I am [Lu Chen], a former mecha pilot who gathered survivors during the escape and built a "steel fortress" underground. By chance, I discovered technology that could be obtained by analyzing Zerg corpses - this became humanity's last hope. Meeting the weapons designer [Su Rui], we relied on Zerg technology to transform weapons and beat back the Zerg attacks again and again. But the Zerg brood consciousness is shrouded like a shadow. It imitates human thinking and sets traps in an attempt to completely exterminate mankind. In order to protect the fortress and take back the earth, I must find the mother nest and start a life-and-death battle with this ultimate monster!
