Adapted from the Chinese classical masterpiece "Strange Tales from a Chinese Studio."
During the Qin and Han dynasties, Commander Wang led his troops to rescue a stunning beauty in a fierce battle against desert bandits in the Western Regions and brought her back to the Jiangdu Wang's Mansion. Unbeknownst to him, this woman was actually "Nine Skies Beautiful Fox" Xiao Wei in disguise, wearing a human skin. This skin must be maintained with human hearts, so Xiao Wei's invisible assistant, Xiao Yi - a demon transformed from a desert lizard - kills people every few days to extract their hearts as an offering to Xiao Wei, expressing his love for her. As a result, the city of Jiangdu is plunged into terror. Xiao Wei develops feelings for Wang, the brave and handsome leader of the Wang army, and continuously uses her magic to seduce him, wanting to replace his wife Peirong.
Peirong discovers that Xiao Wei has fallen in love with her husband and realizes that she is not an ordinary person. She secretly seeks the help of the skilled wandering swordsman Pang Yong and Xia Bing, a pure-hearted demon hunter, to save Wang...
From then on, a complex web of emotions, grudges, temptation, betrayal, resistance, and life-and-death battles unfolds between humans and demons, between familial ethics, between pure lovers, between brothers, and among the demons themselves. The ending is both tragic and unexpected...