Su Yao, a migrant worker in the 21st century, stayed up late to catch up on a Qing Dynasty drama and accidentally traveled through time to become the direct descendant of the fourth elder brother Yinzhen. Facing the cold-faced fourth master and the complicated palace, she faced various situations and clever tricks, making cakes, changing clothes, and cheating on Fujin. With the help of modern wisdom, the Fourth Master seizes the throne. In the turbulent palace struggle, the relationship between the two heats up. In the end, the fourth master ascended the throne and Su Yao became the queen, and together they wrote a legend that was lighthearted, humorous, sweet and romantic.