The fake heiress Gu Nianshu and the true heiress Gu Zhiwei return with memories of their past lives. In their previous life, their marriage arrangements were switched, leading them to completely different fates. After being reborn, Gu Zhiwei insists on exchanging their betrothals, choosing the seemingly glorious marriage from her previous life, but still fails to carve out a path of her own. Gu Nianshu enters the Lu family and discovers that her husband has someone else in his heart. Rather than getting entangled in love, she remains rational, plans strategically, and resolves the turmoil. When Lu Chengze finally realizes his mistakes and comes back to beg her to stay, she calmly makes her position clear: what she has always wanted is not his preferential love, but the authority and influence of the Lu family's head.