During Chosun Dynasty of 18th century. The power struggle between the king and the subjects was intensive. Jang Jong-Oh dies mysteriously while he arranges books king Young Jo's dynasty under King Jeong Jo's order. The king orders Shim Hwan-Ji, leader of Noron Party, to investigate the accident as he gets report from Lee In-Mong while he ordered Lee to find out a book titled 'Si Kyeong Cheon Kyeon Rok'. Thanks to Jeong Yak-Yong's help, Jang Jong-Oh's death is related with this book and he was suffocated to death by charcoals. His death was intentionally committed. By the way the Noron Party that senses a book titled 'Keum Deung Ji Sa' is King Young Jo's secret comment about Prince Sado persistently chases Sang-A, In-Mong's ex-wife, who receives the book before Chae Yi-Suk died. Hearing the cause of Jang Jong-Oh's death, King Jeong Jo presses down Seo In-Seong, chief of eunuchs. In this procedure it is known that the case is a intentionally fabricated trap of King Jeong Jo to remove powerful Noron Party