the story mainly tells the story of the son of dingguo duke who died young. in order to stabilize military power and ensure that the korean army in the north are not affected by the north korean bureau, dingguo duke han yuanniang replaced his twin younger brother han shiyi to become the duke of dingguo mansion. eee。 han shiyi created his romantic and lustful and ignorant playboy image, but unexpectedly became the companion of the fifth prince chen yanyi. after being "been taken over" to the fifth prince's camp, he helped the fifth prince to provide advice to seize the position of crown prince. in this series of storms, the fifth prince and wang zhongyu, son of prime minister wang, discovered han shiyi's identity as a woman and secretly fell in love. during this period, a series of ridiculous stories happened.