Wangyoucao is the seal of the Sansheng Stone to guard the demonic nature of the underworld. One day, Wangyoucao transformed into a human being, but the seal of the Sanshengshi was still unbreakable because the roots of Wangyoucao had penetrated deeply. Only then did King Qin Guang allow Wangyoucao to reincarnate as a human. The Moon God went to the underworld to convey the will of the Emperor of Heaven. When the world is at peace, a large number of ghosts and gods will be reincarnated to benefit the common people. The Moon God and the Forgotten Grass fell in love when they met, but the Forgotten Grass was reincarnated as a human.
The Moon Goddess found the Forgettable Grass. At this time, she was just a child without a name, but was called Meng Yatou. After being hit on the back of the head by a girl named Xiaohua, he remembered his encounter with Yue Lao.
The emperor of the human world began a policy of recuperation, and humans began to reproduce more offspring. After the Moon God returned to heaven, he went to complete the matter that the Emperor of Heaven asked him to form a human marriage.
The Night Travel God and the Day Travel God, a total of sixteen gods, as ghosts in the underworld, no longer want to be night watchmen for the Yellow Emperor. They want to regain their freedom, and the way is to open the seal, but their meager strength is not enough to open the seal. They provoked trouble between Huangdi and King Guang of Qin, and gradually there were many gaps between Huangdi and King Guang of Qin.