When Oh Jae-yeol, the President of the Korean National Criminal Organization, Hwarang, died in a mysterious accident, internal divisions began as a result of a struggle for succession. The black society, which did not miss the gap, came in to take the place of the Hwarang, causing great chaos. The executives of each region of the Hwarang begin to seize power by developing their own ambitions as they begin to deal with the black society. Due to the black society, civilian victims are starting to appear, but the police and politicians who have already been taken over by the black society and galleries are ignoring the victims'. Meanwhile, when the mother of Baek-Han Yu, a former member of the special forces unit, tries to drive the Black Society out of her neighbourhood, she is murdered by them. Hearing the news, he can't contain his anger and begins to take revenge against them.