Pei Zhuer accidentally traveled to ancient times. In order to save her adoptive mother, she disguised herself as a man and sneaked into the Prime Minister's Mansion to search for medicine. However, she was forced to make a deal with Gu Zhiyi, the second son of Gu, to spy on the cold-faced powerful minister Gu Mingze. She worked hard at every step, but inadvertently fell in love with Gu Mingze. He was cold and aloof, but he was only gentle to her. After a misunderstanding, Pei Zhuer ran away with the ball, while Gu Mingze chased his wife thousands of miles away. She ran away, and he was heartbroken. A few years later, she returned as a princess from a neighboring country, but beside her was a little dumpling with facial features similar to his. He pressed forward step by step, and she couldn't avoid him. The intrigues of the court, the grievances of the family and the country, and the mystery of their life experience followed one after another, and the two struggled in the entanglement of love and hate. A deal, a conspiracy, a love affair. Is it a trick of fate or a deep love without regret? Love and hate are intertwined, who can tell what is right and what is wrong?