After transmigrating to the past, Yun Fu is forced into marriage by her family. During the bridal procession, Prince Dingbei, Xiao Jin, suddenly bursts into the bridal sedan, seeking the Destiny Gu. Unexpectedly, the Gu worm burrows into Yun Fu’s body. Xiao Jin’s subordinates inform him that only by having intercourse with Yun Fu can the Gu be removed. Yun Fu is shocked to discover that Xiao Jin looks exactly like her deceased lover from her modern life. Thus begins a tangled web of love and hate, as the two are bound together by the Destiny Gu.