Fox demon Xuxu (played by Fiona Sit) was originally in human form. She was injured by a demon weapon and was saved by Wang Sheng (played by Ling Xiaosu). By chance, she met two demon-conquering masters and apprentices. She worshipped Xia Lao (played by Luo Jiaying) as her teacher and became sisters with Xia Bing (played by Wu Yingjie). She began to follow the two to conquer demons and enchant. However, the kind-hearted Xuxu was deceived by a married man because of her entry into the human world. Xuxu, who was hurt by love, accidentally killed Xia Lao.

Storyline:

Her original life trajectory took a turn. She changed her name to Xiao Wei and lived a lonely life of devouring people's hearts. Unexpectedly, she could not forget Wang Sheng, the benefactor she saved at the cost of her life in Langya County, and she did not expect to meet him again in Taiyuan City. At this time, Wang Sheng had married Peirong (played by Chen Yirong) and lived a happy life. Seeing the lonely and drifting Xiao Wei, Wang Sheng and his wife decided to take her in. However, what they didn't expect was that Xiao Wei couldn't forget her love for Wang Sheng, and she was determined to win Wang Sheng's heart by any means. At this time, Xia Bing, who was tracking down the murderer who killed her master, followed Xiao Wei's breath all the way to Taiyuan City accompanied by Pang Yong (played by Li Zonghan).