The prime minister's daughter Fu Yanran falls in love with the crown prince Li Bi, but soon after the crown prince falls in love with an ordinary and innocent woman named Han Xiaoxue. Framed by jealousy and mistreated Han Xiaoxue, things suddenly took a turn for the better. The emperor believed that the crown prince Li Bi had a bad temper and was impulsive throughout his life, so he passed the title of prince to Li Bi's second brother, Li Ruan. Li Ruan was arrogant but witty and knew how to govern the country and make strategies. However, he fell in love with Fu Yanran, a woman who was as arrogant and intelligent as him. There is another big secret between Yanran and his father. What is it? What will Yanran do and decide?