The Mysterious Fox: Sang Ziming returns to his hometown, Qilin, seeking to find his lover, Lianxiang, to consummate their marriage. He is also on a secret mission to locate the "Qilin Jade Pearl" and to investigate whether its disappearance is related to a rumored fox demon. However, upon meeting Lianxiang, Sang Ziming discovers that she is not the same person he once knew; she is always accompanied by a white-haired fox demon as she searches for the truth.