While apparently staying close to historical facts, the drama's production level was high and the acting was top-notch. The plots and politics in the drama were very intriguing and helped me understand more about the working of Joseon Korea. I loved the fact that our hero, Crown Prince Yi San, wasn't portrayed as invincible and was allowed to have very human flaws. Although Yi San is a real historical figure, his characterization in the drama was done well and his development as a political leader was also depicted well. Overall, this drama is for those who enjoy closely following political ploys. It may be too long or too slow for some, and at some points, repetitive. To me, however, it's one of the best historical dramas ever made , with one of the best background ost tracks. I enjoyed watching every second of it.