Su Wan, a modern law student, is transformed into a concubine in a merchant family. Her biological mother died young and her aunt suppressed her. The inner house is a small space, and the undercurrent never stops. She hid her edge and was cautious, but she was still involved in the turmoil of her eldest sister's marriage and became a pawn in the substitute marriage. Su Wan no longer holds back, and relies on modern thinking and legal knowledge to work through the gaps in the house's rules to find out the truth about the death of her biological mother and win her own marital freedom. With a business vision that transcends the times, he helps the family resolve a shocking crisis and find its own path in the whirlpool of family feuds and business wars.
