A deep secret from Kim Jin-woo's past is slowly eating away at him and making him act more and more irrationally. He loses his position as a philosophy professor due to his erratic behavior. He and his wife turn to a psychiatrist to get to the root of the problem.
The eigth installment of 500 Years of Joseon Dynasty covers the reign of King Sukjong in the late 17th-early 18th Centuries.
