After the death of her father, Qingqiu's little fox demon Yinyin mistakenly mistook the surrender letter from the demon king to Qingqiu as a marriage letter, and ran to the demon realm to recognize the demon king Xiaoci as her fiancé. Xiao Ci knew it was a misunderstanding but kept her, and the two gradually developed feelings for each other in their daily interactions. Yinyin unexpectedly learns that her real child is Ling Qing, the holy son of the Immortal Sect, but she still chooses to stay with Xiao Ci, and eventually gives birth to a little Qilin, which leads to a truce between the immortals and demons and a family of three staying together in peace.
