Myung Yoon finds out about the affair her father has been having with the Queen Dowager and is shocked. Gun and Dosung convince Myung Yoon to leave the capital as she could be in danger, but she insists on staying at her place as she can't abandon her father. Frustrated by Myung Yoon's decision, Moo Baek tells her what her father did to her deceased mother.

Gun suggests dismissing a certain number of court ladies as a way to appease the sky and improve the King's health. The Queen, who holds the power to manage the court ladies, decides to dismiss Court Lady Kim of the Queen Dowager's chamber. Meanwhile, Gap Seok confesses to the court that the Queen was behind the death of the royal taster.

After finding out that his grandfather injured Myung Yoon while trying to get her out of the palace, Gun gets infuriated and asks him to go back to Mungyeong. While the Queen Dowager is away from her chambers, Myung Yoon manages to sneak out the book that contains a prescription for the antidote. Meanwhile, Prince Dosung joins hands with the Queen Dowager and declares that he will become the Crown Prince.