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.

Yoon Bok, having learned who killed her father, tries to immediately run to the police bureau and petition to reinvestigate the incident. Hong Do, asking if Yoon Bok really doesn't know his father's will, stops him, telling him not to rush to seek revenge and do anything rash. Yoon Bok paints Jeong Hyang wearing a mourning dress and smiling in the painting, "Vulgar Wife's Spring Viewing."