Hong Do and Yoon Bok, at Lord Kim Myeong Ryun's request, paint a picture to make Lord Kim's son smile. Hong Do, having heard Yoon Bok's whisper, paints the painting, "Boy Dancer." While looking at the painting, a smile spreads across the boy's face. Lord Kim Myeong Ryun, moved by this, according to his promise, offers his portrait. Hong Do and Yoon Bok, unfurl the portrait and gaze at it, startled. Later, the two seek out each of the lords according to what they heard from Gong.

Hong Do and Yoon Bok show King Jeongjo the portraits of the members of the Five Bamboos Guild painted by the master painter 10 years ago, excluding one that was lost. Hong Do brings out one more painting, saying it is the portrait of the man who killed the master painter and shows him the portrait by Seo Jing without a face. Yoon Bok recognizes the painting her father painted and is shocked by Hong Do's words that he was his best friend.

Hong Do and Yoon Bok, to solve the secret behind the thick paper, go to a paper factory. There, the two hear about the paper's quality from an elderly man. At that moment, Yoon Bok remembers her father Seo Jing turning his compressing machine and explaining it long ago. She puts the paper into the water and the paper dissolves, and a hidden face appears, startling Yoon Bok.