After First Emperor of Qin unified the world, he fell deep into nightmares. A mysterious dark-black ancient jade led him to meet Qing Si of the ancient remnants, learning that the Chinese civilization before the Xia and Shang dynasties was sealed within the phantom realm. Lie Tuo of the Star Sea remnants planned to gather the keys to awaken the mother civilization and devour the world. Ying Zheng awakened the ancient mecha deep underground to fight against the interstellar fleet. The eunuch Zhao Gao revealed his true identity as an alien cyborg, betraying and severely injuring Fusu and Li Si, and was beheaded by Ying Zheng at the desert sanctuary. Lie Tuo came to his senses and blocked the black mist with his body. Qing Si held the keys and leaped into the rift of the phantom realm, separating the civilization records from the catastrophe. Ying Zheng carried the historical materials back to Xianyang, entrusted the inheritance of civilization to Fusu, and finally realized that civilization is not in the phantom realm, but in the endlessly flowing human world.