Shen Zhiwei married into the Ningyuan Marquis Mansion. She wanted to live a stable life, but she was treated harshly by her eccentric mother-in-law, instigated by her concubine, and neglected by her servants. In her previous life, she swallowed her anger and ended up being falsely accused and died tragically. After resurrecting her life, she put away her weakness, sorted out the accounts with an abacus in hand, and uncovered corrupt officials; she saw through her mother-in-law's dietary scheme, and led an army to let her suffer the consequences; she faced her concubine's false show of goodwill, and directly exposed her malicious intentions. The Marquis of Ningyuan, Gu Yanci, looked on with cold eyes when he first met her, but was gradually attracted by her intelligence and tenacity. From protecting her secretly to supporting her in public, he fought for her against all the evil spirits in the mansion, and even handed over all the power of the Marquis' mansion to her. The two went from mutual respect to deep love. Shen Zhiwei established a firm foothold in the Hou family, and Gu Yanci also found his sincerity. Together, they wrote a heart-warming story about the Hou family's sweetheart and his legitimate daughter's counterattack.