Lu Wanrong returns to the day of her husband Gu Changfeng's fake death. To rewrite her tragic fate, she finds Xie Yan, an illegitimate son of her mother-in-law living in Jiangnan who looks strikingly similar to Gu Changfeng, and has him impersonate the amnesiac returning Marquis of Nanan. Gu Changfeng returns to the mansion with his pregnant concubine Liu Er, only to find that the title and the authority in the mansion have long been occupied by Xie Yan. Holding the account books, clan records, and official documents, Lu Wanrong joins forces with Xie Yan to set up traps step by step, producing irrefutable proof of the theft of ancestral property. Gu Changfeng finds himself deserted by everyone, is forced to give up inheriting the title, and is sent back to his hometown.