Gu Mingzhu, a modern psychology graduate student, accidentally traveled to an fictional ancient dynasty and became the daughter of Prime Minister Gu. After waking up, he discovered that he had the power to read minds. In the step-by-step life of the harem, she used her mind-reading skills to skillfully resolve crises, and met the prince Xiao Jinyu, who was gentle on the surface but deep-minded in reality. The two gradually developed feelings from testing each other, and gradually deepened their understanding of each other while facing the court struggle together. At the same time, Gu Mingzhu also met Shen Qingwan, the dignified and elegant daughter of the Taifu. The two went from hostility to sympathy, and eventually became allies who supported each other. As the plot develops, Gu Mingzhu gradually discovers that her time travel is not accidental, and there is a greater conspiracy hidden behind it. She began to use her wisdom and mind-reading skills to gradually uncover the truth, and finally helped Xiao Jinyu ascend the throne and find her own happiness. The story revolves around Gu Mingzhu's survival, growth and love in the palace, interspersed with multiple story lines such as power struggles, friendship bonds, and the mystery of her life experience, striving to present a true, three-dimensional and humanistic picture of the ancient palace.