In order to protect their nation, some may deem it necessary to assassinate the leader of the opposing country. Emperor Lan of the Northern Kites had planned to assign a smart, brave, and charismatic princess to carry out the task. Nevertheless, the adversary emperor had a different preference and chose an arrogant and rude woman instead. To complete the mission, Lan assumes the guise of the desired princess and sets out to eliminate Orhan, the ruler of the enemy territory.