In the third year of Jinghe, the tyrant Yuwen Qingyu returned to his youth, which coincided with his young queen Chu Yun'er entering the palace for the first time. In his previous life, he mistakenly believed in a traitor. He betrayed the entire Chu family, lost his true love, and lived in regret for the rest of his life. In this life, he has the opportunity to eliminate traitors and protect the Chu family. He favors Yun'er alone and has no regrets in dismissing the Sixth Palace. Taking the mountains and rivers as an offer, taking the rest of his life as a promise, and giving all the emperor had, just to make up for the regrets of his previous life, to stay with her for the rest of his life, and to be happy every year.