"From now on, only the first daughters of Na-ri will be able to rule the Woo Empire." Yu-ri, who has become a powerless emperor due to the situation of the Seon-hwang, wants to consolidate his power and break the power of Empress Jae-seo. In order to take the sons of the 4 kings as concubines and take them hostage, Yuri decides to declare a concubine selection process in order to bring the nobles who are on the empress’s side. One day while visiting the four castles, he meets Doha, the prince of Heukjuseong, who became a slave due to his mother’s treason, and Yuri becomes interested in him who talks about love in a messy way... . Will Yuri be able to become a powerful emperor as she wishes? The bloody and windy royal battle between Emperor Yuri and her begins!