In the distant future, Earth's civilization is lingering in the shadow of the Cthulhu interstellar empire. Human beings are nothing more than the product of genetic experiments by advanced civilizations, imprisoned in the huge testing ground of the solar system. Until the appearance of Li Changsheng, this selected "symbiote" discovered the "Spark" technology left behind by ancient civilizations in the ruins of Mars, opening the way for earth civilization to resist.
