Seo Ji-yoon, a lecturer in art history at Hankuk University,[6] seems to have everything she wants. She is about to finish her PhD, supervised by renowned professor Min Jung-hak, which would ultimately lead to a faculty position at the university. She also has a good family life, with supportive husband Jung Min-seok, a wealthy businessman, and mother-in-law Kim Jung-hae. For her PhD thesis, she is assigned to research a recently discovered painting Geumgangsando by An Gyeon, scheduled to be displayed as national treasure under the auspices of Min Jung-hak. However, Ji-yoon's discoveries seem to doubt the authenticity of the painting. At a conference, a student named Han Sang-hyun challenges her on that authenticity question, which Ji-yoon deflected, citing she needs time to ensure its authenticity.