The lonely and weak girl Nie Xiaoqian, who was controlled by monsters, accidentally met the scholar Ning Caichen who was going to the capital to prepare tribute for the Tree Demon Grandma. After multiple encounters with Ning Caichen, Xiaoqian, who is naturally kind-hearted, was impressed by her pure qualitiesMoved. After learning about Xiaoqian's situation, Ning Caichen requested Yan Chixia to retrieve Xiaoqian's soul. However, he was stopped by the old demon of the Black Mountain, and thus went through a tortuous and difficult journey from demon to human. In the end, evil triumphs over righteousness,Ning Caichen and Nie Xiaoqian eventually became married.