No actually, it really was short and pretty simple. It showed the mcs in dire situation, leading them towards the evil, and then allowing them to succumb it. Pretty simple.
Also it was a really nice way to explore or like show the past of the mcs (that still haunt them or like because of that past they're facing some sort of trouble in the present), through their own eyes, like when we got to know about Ha yun (the daughter) first through Soo jin's eyes and then in the last episode through Ki hun's eyes... It was a nice interpretation but sad story...
Anyways, it still is a good watch.