Jumong examines the life of Jumong Taewang, founder of the kingdom of Goguryeo. Few details have been found in the historical record about Jumong, so much of the series is fictionalized.
If you're looking for a historical drama about the foundation Goguryeo then this drama is NOT it. This drama was mostly about the in palace melodrama and conflict. Furthermore, it's important to know that this drama included a handful of fantasy elements sprinkled around all over it, so don't expect it to be grounded to reality. Han Hye Jin who played the female lead as Soh Seo No was a poor cast choice. Soh Seo No needed a more rigid and stubborn looking actress to better fit the character.
A weak incapable king, a greedy prince and an underdog illegitimate prince going aimlessly in circles. Wars, fights and action were surprisingly and disappointingly scarce for a never-ending 81 episodes historical drama about the founders of Goguryeo. Which is why we had little to no planning or strategy for these wars. That one big war at the end against another nation that we waited ages for, was condensed down to just 1 singular episode of utter disappointment. In fact, the entire last episode was extremely rushed and we were given a joke of a wrap up. They had all the time in the world and they couldn't make a decent send off. The last episode was absolutely stripped off genuine emotions. It robs you the wrong way after you had gone through 81 episodes. Speaking of which, they were trying too hard to reach the 81 mark with prolonged uncut full-scenes repeated flashbacks! You would lose your mind watching it serializing.