Accidentally, writer Meng Xiao Tang is transformed into the female devil Feng Nan Xi of the Moon Shadow Cult in her novel, who was hunted by the whole world. She thought that by killing the disciple of Xiaoyao Sect, Ye Wu Chen, according to the plot, she could return to the real world. In order to find Ye Wu Chen, Meng Xiao Tang is forced to cooperate with Shen Yu. On the surface, the two appear in love, but in fact, they have their own agendas and battles of wits. After experiencing a series of turmoil in the world, they gradually develop feelings for each other, and a heartwrenching relationship begins.