In 2700, the mechanical Zerg devoured the earth's metal, and humans retreated to the underground fortress. {Lu Chen} As a mechanical engineer at Qingfeng Fortress, he relies on dismantling abandoned mechas every day to maintain the energy of the fortress. However, he was questioned by senior officials for proposing to "modify mechas to fight against the Zerg".
When he went out to collect parts, he accidentally obtained a "mechanical core" that could analyze Zerg technology - changing Zerg claws into mecha blades, and using Zerg energy cores to drive weapons. He secretly modified the first "bug-hunting mecha" and rescued the fortress residents during a bug attack, finally gaining support.
After {Su Wan} joined, she provided maintenance support for the mecha. Lu Chen formed a resistance army, raided Zerg strongholds to obtain resources, and continuously upgraded his mechas. Faced with the Zerg Queen's mechanical slave plan, Lu Chen led the resistance forces to break through the defense line, eventually destroying the Zerg core and allowing humans to return to the surface.
