The film tells the story of Liqing, a snake demon capable of enchanting all living beings. To win the heart of Wang Sheng, with whom she fell in love at first sight, Liqing does everything she can to enter his home and plans to switch places with Xu Pan, Wang Sheng's wife. However, Liqing did not expect that her actions would repeatedly disobey her mother-in-law, an entity that collects the souls of men. Her selfish ambition ends up enraging her mother-in-law, putting Wang Sheng in danger several times. Will the love between the two continue despite everything?