The heroine Shen Zhiyi appears to be the unloved concubine of the Shen family, but in fact she is the real legitimate daughter whose identity was changed due to family secrets. She witnessed the suspicion of her biological mother's "death of illness" since she was a child. She walked on thin ice in the deep house, secretly observing and learning from various forces. In order to find out the cause of her mother's death and regain everything that belongs to her, she took advantage of the family's old lady's funeral to show her weakness and set up the first game. From internal strife in the back house, business strife to party strife in the former government, she moved among various forces, taking advantage of contradictions to shake up the situation. In the process, she met the male protagonist Wei Shao, whose identity is a mystery. From testing and using each other to fighting side by side, the two jointly solved a series of unsolved cases that extended from the house to the court. In the end, all the clues pointed to the old case involving the change of throne and the reshuffle of the family. Shen Zhiyi and Wei Shao joined forces to uncover the truth in the whirlpool of power and completed the transformation from "chess piece" to "chess player".
