Du He, who was born in another world, died suddenly because he was immersed in the history of the Sui and Tang Dynasties. When he opened his eyes, his soul passed through the four years of Zhenguan and became the second son of Lai Duke Du Ruhui and the imperial consort of the Tang Dynasty - a tragic figure who was involved in Li Chengqian's conspiracy in official history and brought shame to the clan.
With the memories of two lifetimes and a wealth of knowledge, he is well aware of the undercurrents of Zhenguan's throne, and he also understands the tragic fate of Li Chengqian who turned from a benevolent prince to a treasonous and criminal minister. Unwilling to repeat the same mistakes, and unwilling to sit back and watch the Tang Dynasty's career decline, this "anti-consort" decided to break the rules and go against the usual path: to gain popularity with things that benefit the people, to conquer the fierce general Fang Yiai with boxing skills, to knock on the door of the East Palace with his extraordinary resourcefulness, and to approach Li Chengqian step by step, channeling his surly temperament and helping him break free from the shackles of fate.
The undercurrent of the court game is surging, King Li Tai of Wei is eyeing him, the power of the Changsun family is hard to shake, and Princess Gaoyang is arrogant and disrupting the situation. As a prince-in-law, Du He made an act that went against the world, and stood firm in the turbulent times. While guarding the glory of the Du family, he also tried to turn the tide of the throne. He vowed to rewrite the tragedy of Li Chengqian, reverse his own destiny, reshape the Zhenguan Reserve Bureau, and create an unconventional legend of the prince-consort.