Once she traveled through time and became the prime minister's daughter, her sister's concubine made the originally stable Ran family begin to waver. Ran Ran, who did not want to get involved in the fight, was forced to marry into Prince Duan's palace and became the only mistress of Prince Duan's palace due to the fate of Yu Huayuan: she had long known about her father's ambition, but could not resist her mother's pleading, but she and Wen Ren Jinrui complemented each other, and their relationship gradually deepened. Faced with the mystery of her life experience, the arrogant ambitions of powerful officials in both the government and the public, and the raging secret war in the harem, Ran Ran joins hands with the Wenren family. She believes that the stable life he and she want will soon come true.