At a certain point, it unfortunately just got very confusing. Who is giving what orders and why? Why are people turning onto each other, for what purpose? Who is the head of the kartel?
I think they've changed the plotline that Jae Min is Bok Soon's lost child instead of Jae Kyeong, because Jae Kyeong and Bok Soon have the same birth mark and it was hinted in the past.
I used to watch every episode of this drama once it came out immediately, but I stalled and I just finished episode 105 and wooooooooowww that ending, it reminded me why I kept watching an episode every day. XD