The Nine-tailed Fox Bai Qian, the youngest daughter of the Fox King, is brought to Kunlun Mountain to become a disciple of the God of War, Mo Yuan. While studying there, a war breaks out that leads to Mo Yuan sacrificing his life to seal a demon lord.
Seventy thousand years later, Bai Qian attempts to also sacrifice herself to re-seal the demon lord but is instead thrown to the mortal realm where she loses all her memories and divine power. Living alone on a remote mountain, Bai Qian saves Crown Prince Ye Hua of the Nine Heavens, who is actually her fiancé in Heaven and greatly resembles the late Mo Yuan. The two start falling in love, not knowing the true identity of the other person and their love tribulation that involves them meeting in three different lives and three worlds.