During the Yongxi period of the Song Dynasty, Taizong was unable to pass the throne to his own son due to an alliance, so he had to frame his younger brother for rebellion. Master Shen Lun was implicated in this matter. In order to stabilize the situation in the court, a daughter of an important minister and a well-known family was selected to enter the palace. Shen Luyi had no choice but to enter the palace because her stepmother did not want her own woman to suffer. However, she unexpectedly married Prince Xiang as a concubine and therefore missed her childhood sweetheart Wei Neng. After entering the prince's house, she experienced several dangers. Feeling the prince's trust and respect for her, they agreed to persuade her father, brother and Wei Neng to help him inherit the throne, and gradually became one of his most effective advisers. When King Houxiang came to the throne, she favored the harem for a while. However, the days of fighting in the harem made her tired. At the same time, she knew that there was no sincere relationship between Zhenzong and herself except sympathy for each other. When she saw Liu Yudie, Zhenzong's true love at that time, she was even more confused. They unexpectedly met Wei Neng when their hearts were entangled and painful. The two solved the misunderstanding many years ago that Wei Neng thought she had fallen in love with Prince Xiang before entering the palace. They also knew that Wei Neng had always loved him deeply over the years. Lu Yi was facing ideals and republican childhood sweethearts. When Lu Yi was not sure how to make a choice, Zhenzong discovered his relationship with Wei Neng. Zhenzong was furious, but Lu Yi persuaded her to spare Wei Neng's life, and Lu Yi was placed under house arrest. But two years later, she chose to fulfill both of them. Many years later, when the emperor died and she came back to pay homage, she discovered that everything was different from what she thought.