During the Zhenguan period of the Tang Dynasty, Li Chengqian, the eldest son of Emperor Taizong Li Shimin, eventually embarked on the path of rebellion because he was dissatisfied with his father's favoritism and the fighting between his brothers. However, the reincarnation of fate made him reborn as himself who had just become the prince. This time, he is no longer a simple prince, but a wise man with memories of past lives. He decided to change the tragedies of his previous life and face the complicated palace struggles with indifference and wisdom, even at the expense of having a relationship with his father, Li Shimin, who was more of a monarch than a father and son. In the process, his attitude towards Wu Zetian also experienced a change from killing to retaining her, and finally brought her into the harem. This is a counterattack from the prince to the emperor, full of intrigues, love and historical twists and turns.
