The story follows the story of Yuwen Xinyue (the eldest princess), who has a noble status and a tough character, and went through twists and turns in the court. Finally, she relied on her wisdom and courage to successfully safeguard the peace of the country and the well-being of the people.​

The story begins when the eldest princess returns to the palace. Due to her many years of traveling abroad, she has extensive knowledge and a heart for the world.After returning to the palace, the eldest princess not only faced complex palace relationships and power struggles, but was also involved in a conspiracy concerning the fate of the country.

She is well aware of the undercurrents and crises in the palace, but she also firmly believes that she has the ability to resolve the crisis and seek benefits for the country and the people.