Aware of Yeo Hwa's true identity, Su Ho takes measures to prevent her from engaging in any reckless behavior. Yoon Hak and Lee So discover that Sung Hoo is the King's Guard who vanished after receiving a secret order from the previous king fifteen years ago. Meanwhile, in her quest for any signs of her brother, Yeo Hwa encounters an unexpected approach from someone.

The King and Yoon Hak find it strange that Ji Sung took in Yeo Hwa, the sister of Cho Sung Hoo, as his daughter-in-law. They believe that he took her as hostage to catch him. At the same time, Ji Sung invites Yoon Hak and Su Ho to his house. Meanwhile, Nan Kyung wants to talk to Yeo Hwa about her family in private.

So Woon looks into Nan Kyung's background and relays the information to Su Ho. Yeo Hwa also gets a tip from Nan Kyung that her brother's disappearance is related to the matter at the palace. Yeo Hwa asks Ji Sung about her brother, but he tries to hide the truth from her. When Ji Sung secretly leaves the house in the middle of the night, Yeo Hwa follows him.