When Shen Ningmo comes of age, her father, who favors sons over daughters, and her younger brother force her to drink aphrodisiac water and lock her inside a coffin as a sacrifice to Xie Zhoubai, a 500-year-old cat immortal with whom they once made a deal. The two become intimate. When Shen Ningmo wakes up, she believes it was only a dream. She leaves after learning that her grandmother is critically ill and later gives birth to a daughter, Shen Yihe. Six years later, while feeding cats in an effort to find a cure for Yihe's illness, which causes her to develop cat ears and paws, Shen Ningmo reunites with Xie Zhoubai. Recognizing her, he fiercely protects her as his wife, dealing with the kidnapping attempts by her family and the schemes of Bai Xiyao, a member of his own clan. As misunderstandings are cleared up, their feelings grow stronger. Eventually, Shen Ningmo becomes pregnant, and the two hold a wedding, beginning a happy life together with their daughter.