Yang Jia, the top student in the college entrance examination, traveled through ancient times and mistakenly boarded the princess's sedan chair, which broke the marriage between the top scholar and the princess. She "killed" her husband and was helpless. She fainted in the snow and was saved by the madam. Unwilling to be humiliated, she threw herself into a lake and was rescued by the incognito emperor. The emperor was afraid that her whereabouts were unknown, so he asked her to look for Prince Mu. She got acquainted with Mu Xingyun, and then accidentally entered the Hou Mansion and became the legitimate daughter of the Hou Mansion. After experiencing the battles in the palace and house, how did she finally choose between four beautiful men and become the empress dowager who listens to politics behind the curtain...