Su Qingtang, the concubine of the Prime Minister's Mansion, has been hiding in the mansion since she was a child due to her mother's early death and low status. However, she secretly learned superior strategies by relying on her mother's military writings and poetry skills. The emperor set up a royal school for women to train potential concubines. Su Qingtang was sent into the school as a "chess piece" by her family, but unexpectedly found that the intrigues among the ladies in the school were even worse than in the palace. She used the disguise of a "weak concubine" to deal with noble ladies such as princesses and ministers' daughters. She gradually rose to prominence through "campus-style struggles" such as poetry competitions, military exercises, and embroidery competitions. At the same time, she was involved in the struggle for palace power - helping the emperor to understand She uncovered the prince's rebellion plot and helped Gu Huaijin, the Zhenbei general, put down the war in the northwest. In the end, she counterattacked from the "sacrificial concubine" to the head of the house and the palace mistress. Together with Gu Huaijin, she ended the mastermind behind the scenes and achieved her life goal of "not being a tool."
