If a momentary passing by is the beginning of regret, then I would rather be the one hurt. During the Republic of China, Gu Yi, the shopkeeper of Mo Se Tang Rouge Shop, traced the treasure of the Soul-Returning Incense in Mu Mansion and discovered that the eldest daughter of Mu Mansion, Mu Lan, looked very much like Chi Yan, so he launched a series of investigations around Mu Mansion. After getting along, Mu Lan fell in love with Gu Yiqing, but Gu Yiqing always regarded Mu Lan as Chi Yan. Mu Lan finally realized that she was just a substitute for the dead person, and her feelings for Gu Yiqing also changed. Beiyang warlord Zhong Furan fell in love with Mu Lan and learned from Mu Qing that Mu Lan was the soul-returning fragrance. As long as Zhong Furan married Mu Lan, Zhong Furan would be immortal forever, but Zhong Furan had to support Mu Mansion. Due to the pressure from her family and Gu Yiqing's indifference, Mu Lan was finally forced to marry Zhong Fulan. Little did she know that Zhong Fulan really liked Mu Lan, but an accident happened on the day of the wedding. Mu Lan died unexpectedly. Zhong Fulan, who was desperate, had to change the wedding into a funeral. He erected a plaque for Mu Lan Qing in the ancestral hall and began to secretly investigate the original incident. Mu Lan did not die, but was replaced by Xia Ling on the way to get married, and was hidden in the Mose Hall. The jealous Thousand-faced Fox told Mu Lan the truth from beginning to end. Her birth to her existence was nothing more than a chess piece. The broken Mu Lan gradually turns dark, and where will the relationship between her and Gu Yiqing go...