Shen Jinghong, a top modern fund manager, was reborn as the most disliked concubine in the ancient Shangshu Mansion. As soon as she woke up, she was forced to replace her beloved sister-in-law and marry Xiao Yan, the prince who was rumored to be frail and powerless. Relying on her financial knowledge and the precise layout of a trader in her previous life, she managed to survive step by step in the cannibalistic harem and court. She and her forbearing prince husband changed from "contractual allies" who tested each other to "powerful partners" fighting side by side. They worked together to eliminate political enemies in the court and exposed the conspiracy of the legitimate sister and the scumbag to usurp the throne. Just when she helped her husband ascend to the top of power, thinking that her great revenge would be avenged, she was horrified to discover that her rebirth was no accident, and there was a shocking secret hidden behind it that affected the fate of the two countries.