In order to save the family, the concubine Shen Wanyin entered the palace draft instead of her eldest sister. She used her gentleness to hide her edge and use her strength to gain strength, and she was promoted step by step from the bottom of the class. In the three-way struggle between the queen, the noble concubine and the beloved concubine, she uncovered the truth about an old case ten years ago - the death of the former queen was closely related to the injustice of her family's extermination. In the end, she overthrew the powerful and vindicated her family, but found that she had been trapped within the red wall, and her original intention was hard to find.