In the seventeenth year of Chengxi's reign, the Shen family was convicted, and the fifteen-year-old Shen Lingyi was imprisoned in Yeting. Her mother died outside the palace gate, and her sister's whereabouts were unknown. She even had her name taken away, leaving only her crime number Xin Forty-Seven. She originally thought she could regain her innocence by finding evidence that her father had been wronged, but she discovered that her father was not completely innocent, the queen was not a benefactor, the concubine was not just an enemy, and the missing sister had already become the player in another chess game. From a sinful slave in clothes to a female official in the palace, from a lowly imperial concubine to the regent mother, Shen Lingyi uncovered the truth again and again, and became part of the rules again and again. Within the palace walls, the most difficult thing to win is never a certain person, but to prevent yourself from becoming the person you once hated most. Pure ancient harem plot, no time travel, no rebirth, no system.