Son of a highly reputed official and a noted writer, Yunseo thinks of authority to be vain. Amidst the derangement that he faces from the constant scolding of his family, he comes across an indecent novel and is fascinated by it. He is then inspired to write one himself with the help of a family rival to draw illustrations for his book. The book is soon the most talked about topic in town and is eventually read by the King's favorite concubine. With her involvement, the two men face a tricky web of intrigue - once in, impossible to bow out.