When Prince Dosung finds out about the plan to forge the royal seal to install him as Crown Prince, he causes a scene at the palace by performing an exorcism. The Queen Dowager gets swayed by the aftermath of her plan. Gun and Myung Yoon barely escape from the government officials and make it to Gun's grandfather's house. There, Myung Yoon finds out who Gun really is.

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.

The Queen Dowager is infuriated by the attack Left State Councillor Yoon launched on her. Upon hearing the news, Prince Dosung begs for her forgiveness, and he is told to convince his grandfather to resign and retire to the countryside. Meanwhile, Myung Yoon enters the palace upon her father's order. Prince Dosung asks for Myung Yoon's help in finding the poison used on the King.