Su Hanyan and his brother Xiao Yan accidentally traveled to the Dasheng Dynasty. Xiao Yan became the emperor of the current dynasty, and Su Hanyan was the legitimate daughter of the Zhenguo General's Mansion. The two originally lived peacefully in ancient times, but unexpectedly, Su Hanyan's fiancé Shen Linyuan proposed in public in the court that she be demoted to a concubine. The emperor's brother came to the defense, removed his son from the throne and broke off the engagement. Then the prime minister secretly planned to use Beiyan's marriage proposal to cause trouble. The two brothers and sisters dealt with it calmly, and finally defeated the court conspiracy, protected each other in another world, and lived calmly.