The incognito princess of the subjugated country accidentally met the prince of the current dynasty in a vest, and they were involved in the theft of the King of Medicine's ancient book, and accidentally got married.
In order to obtain the ancient book, the two had to temporarily become teammates. During the day, they were a young couple who loved each other, and at night, they were a detective team looking for the ancient book. While getting along, the two understand each other's knots, grow together, and develop feelings for each other.
But the good times did not last long, as the traitor framed them and both of them were imprisoned. In order to save her lover, the heroine was forced to marry far away and became a princess.
The two people, who had changed their identities, met again in the palace, but their enemies were hidden. In order to find out the real culprit behind the scenes, the two people once again staged a drama. During the day, they were victims of a political marriage that disliked each other, and at night, they were a couple in distress who were deeply in love. The two cooperated with each other and gradually found out the truth about the theft of Yao Wang's ancient book. They followed the clues to find out the real culprit behind the scenes, and stopped the conspiracy to usurp the throne.
The two finally became a couple and ruled the world together, making the seas, rivers and rivers clear.
Purpose: Destiny should be controlled by oneself