The story revolves around Ogami Ryutaro aka "The Owl", a man who controls Japan from within the shadaows, and his son Ogami Ryu , who counters his father as a "dark hero."
"The Owl" is Ogami Ryutaro, a mastermind who solves various scandals and sensational cases by covering them up or bringing them to light. Ogami Ryu upholds justice with a worldview very much different to his father, and he works behind the scenes in order to correct his father’s actions.
(Source: Drama-Otaku)