She was originally an inconspicuous nine-tailed fox in Qingqiu. When she was going through a tribulation, she was accidentally rescued by the cold and ascetic emperor of the Celestial Clan, and they formed an indissoluble bond from then on. The emperor changed her fate against heaven and even destroyed his own immortal bones; the Lord of the Demon Realm overturned the three realms for her and was willing to give up his dominance; and the mortal prince, as gentle as jade, guarded an empty city for her and waited for three lifetimes. The journey to immortality is long and entangled with love and hate. She is burdened with the secrets of the three realms and is dealing with three talented and stunning men. Should she choose to stay with the cold emperor for nine days together, or follow the Lord of the Demon Realm to sink into the Demon Realm, or accompany the mortal prince to watch all the fireworks in the world? This catastrophe on the path to immortality can only be ended with the sacrifice of one's heart.