Song Rulan, the daughter of the Prime Minister in the royal book, discovered the adultery between her husband and his concubine, and was poisoned to death. On the road to Huangquan, she encounters Shen Zhihua, the legitimate daughter of the Duke of Guo, who has not yet finished her life but wants to die. In order to take revenge, Song Rulan borrowed the identity of Shen Zhihua to return to justice. From then on, she used the name of "Shen Zhihua" to deal with the turbulent harem and court. She worked step by step to reveal the truth that her stepmother poisoned her biological mother and that her concubine had set up a scheme to steal the marriage. She even accidentally got involved in the whirlpool of the prince's rebellion and the change of imperial power. In the process, she and Zhao Xuanjing, the secretive prince of Pingnan Prince, went from suspicion to alliance. In the end, they worked together to eliminate the traitor and upright the emperor, deposing him to the throne of the emperor. She also wore the phoenix crown and became a legendary queen of a generation.
