After the Lich War, the heavens used divine power to imprison the human race. The human emperor Xin died in a wild war to protect the clan, and the legacy Zi Heng fled with the "Secret Book of the Human Emperor". Su Wu, a nine-tailed fox from Qingqiu, secretly assists Nuwa on her orders. She is both a beauty and a comrade-in-arms, and the two gradually develop a bond. On the way, with the help of the witch clan's legacy, Ziheng temporarily awakened the power of the emperor of the earth, and led the anti-heaven forces to fight for the Nine Cauldrons and resist the emperor of heaven, hoping to defeat the conspiracy of the heaven.
During the decisive battle in Haojing, the Emperor of Heaven came in person, and Su Wu sacrificed her cultivation to protect Ziheng, revealing her true form as Nine Tails. At the critical moment, Zichen, the descendant of Ziheng, came against time and space, carrying news of the survival of the human race in the future and repelling the enemy. Ziheng finally realized that "the human emperor is not an emperor, but a protector and wilder", so he took Su Wu to live in seclusion in the East China Sea, leaving the secret fire to pass on to future generations. With "past struggle, present protection, and future inheritance", he created a closed loop of the immortal wildness of the human race.
