Yeongwonhan jegug

In 1800, The Royal Party insisted that the political power should be centralized to the King, but the other party (The Old Party) insisted that the political power should be centralized to the majority of the ministers. One day, official Jang was ordered by the King to arrange and edit the record of the former King Yeongjo. All of a sudden, Jang dies. Soon it was disclosed that Jang was killed by the Old Party because of their connection with the book. For this incident , the King tried to get rid of key members of the Old Party, but the Old Party resists the King's will. What was in the book? Who was involved? Why? The political intrigue will keep you on the edge of your seat.