An accident made the princess Li Jing (played by Ying'er) meet a man named Wang Ying (played by Hawick Lau), and as time went by, Li Jing gradually developed a secret affection for Wang Ying. Because of the accidental injury to Li Jing, Wang Ying was thrown into prison, and under Li Jing's bitter pleading, Wang Ying was saved from death and sent to the frontier.　　The fox demon Xiao Wei (played by Bai Bing) was imprisoned in the ice hell because she violated the laws of the demon code, however, she was thinking about her former lover. After some searching, Xiao Wei found that Wang Ying was the man she wanted to renew the front edge, however, the blood moon and lunar eclipse were imminent, if Xiao Wei couldn't find the same origin and different hearts, her soul would be scattered, so she had to suck the blood yang, so that she could maintain her human form. Xiao Wei created an opportunity to meet Wang Ying, and as time went by, feelings gradually developed between the two, and at this time, Li Jing came all the way to find Wang Ying, and she saw all the intimacy between Wang Ying and Xiao Wei.