The story begins several years after the Maweipo Incident, when the Anshi Rebellion has not yet been completely quelled. Yang Yuhuan's soul was reborn as "Shen Zhenzhu", an official daughter who was imprisoned in Yeting due to her father's conviction. With the memory of blood and fire, she entered the palace in a low-key manner with clear goals: first, to find out the truth about Maweipo, second, to prevent Datang from completely sliding into the abyss, and third, to find a true destination for herself.
Relying on the knowledge and wisdom of her previous life, she skillfully navigated the turbulent court and attracted the attention of King Jianning Li Tan, who was striving to revitalize the royal family. The two went from testing each other to joining hands. In the process of putting down the rebellion, confronting the traitors in the DPRK, and appeasing the turbulent people's livelihood, their relationship became increasingly deep. However, the old emperor Li Longji gradually felt that "Shen Zhenzhu" looked like a noble concubine, and his obsession resurfaced; the prince's party became more and more jealous of the highly accomplished Li Tan; and the remnants of Anshi were also secretly making trouble.
In the whirlpool of old and new emotions and the cruel struggle for imperial power, Yang Yuhuan gradually uncovered the conspiracy of her past life, and found a more important meaning in life than "the honor of a noble concubine" - to assist Mingjun and protect the beautiful rivers and mountains she had loved with her life. In the end, she and Li Tan jointly created a "post-Kaiyuan prosperous age" that was different from history and brighter.