During the Yongchang period of the Zhou Dynasty, Shen Qingli, the daughter of the Taifu, was forced to enter the palace for a draft. She originally wanted to live an ordinary life, but she became the target of public criticism because she looked exactly like the emperor Bai Yueguang who died young. The queen tried to win over her, the concubine made things difficult for her, the queen mother tested her, and the moody emperor Zhou Jingheng even put her on fire.
Qingli had no choice but to fight step by step, using weakness as armor and wisdom as blade to survive in the cannibal harem. However, after accidentally falling into the water, she awakened her second personality - Shen Qingci, a modern psychology doctor. From then on, one person hides two souls. During the day, she is a gentle and tolerant palace concubine, and at night, she is a cold-eyed strategist.
When the witchcraft case, the death of the prince, and the interference of relatives in politics came one after another, the two souls of Qingli and Qingci began to join forces. They discovered that their entry into the palace was actually a carefully planned chess game, and that the death of Bai Yueguang, who died young, contained the secret to overthrowing the dynasty...
