The past and present lives of Lu Shiqi, a peach blossom spirit, and Duan Beili, a Taoist priest. Duan Beili is devoted to hunting demons, and Shiqi goes along with him. If they can’t beat one, no problem: Shiqi can call in reinforcements from the Divine Realm. Gradually, Duan Beili grows from an ordinary Taoist priest who can’t tell good from evil into a candidate to lead his temple, a man with flesh and blood. But just as Shiqi’s identity is revealed, Duan Beili must choose between his calling to hunt demons and Shiqi’s life. When they clear up their misunderstandings, they are drawn into the entanglements of their past lives. Faced with her fated duty as a Spirit Registrar and her love, Shiqi ultimately chooses her duty. Though she is a low-ranking little demon with meager powers, she sees the source of the chaos in the Demon Realm: the absence of a Spirit Registrar. Driven by fate, she recovers the divine artifact and her memories of her past life, ultimately becoming the new Spirit Registrar Immortal of the Celestial Realm and bringing centuries of chaos in the Demon Realm to an end. From then on, the Demon Realm and the human world leave each other alone and go their separate ways. As for Duan Beili, he hands the position of temple master to someone else and, after recovering his missing immortal bone, successfully ascends to immortality. When they meet again, what will they choose?