The nuclear bomb counts down to 48 hours, and the human federation split into two factions due to Star Armor technology. Supreme Commander Lu Zheng and the Star Armor symbiote Xing Yao teamed up to suppress the rebels, but they uncovered a bigger conspiracy - detonating a nuclear bomb would activate ancient alien ruins and release dimensional energy that would destroy the entire galaxy. Former comrades turned against each other, laboratory data was tampered with, and the hidden cost of Xing Yao's life forced Lu Zheng to make a decision. When trillions of star armor cover the sky and cover the sun, Lin Xue's research notes point to a bloody truth: star armor is not only a weapon, but also a tombstone of civilization.