Myung Yoon decides to stay with the Crown Prince until he safely makes it out of the Capital. But Myung Yoon suddenly falls ill, which forces them to visit a nearby physician. However, the physician notices who they are and calls the government officials to catch them. Meanwhile, the Left State Council suggests forging the royal seal to install Prince Dosung as Crown Prince. 

The King falls into a critical condition, and Choi Sang Rok is the only one who knows how to cure his illness. Prince Dosung decides to comply with Queen Dowager's order in exchange for saving his father and the Crown Prince. After finding out who Gun is, Myung Yoon reveals her identity as well. Meanwhile, Choi Sang Rok finds leverage he can use against Left State Councillor Yoon.