The general public doesnt know but most of the money and power of Korea are in the hands of four rival families. Each of these families has an elder who is the face and the voice but they have been slowly losing control to their respective heir. Moon Byul-yi,  Kim Yongsun, Jung Wheein and Ahn Hyejin were raised in a world of men as the leaders. And they are willing to defy everything to be on top, even if it means join their enemies.