A Korean-style secret agent research show with a story about a top National Intelligence Service (NIS) agent. In his endeavor to discover the inner traitor that delivered him to his downfall, he confronts a much bigger enemy behind the employer.
Han Ji Hyuk is the top discipline agent in the NIS. He is held in awe via his colleagues for his perfect document and ability at completing missions. He had been riding an organized crime syndicate right into a nook whilst he vanished off the face of the earth, but he returns a 12 months later to shake up the syndicate another time.
Seo Soo Yeon is the top of team 4 of the Crime Information Center who is extremely good at performing her responsibilities and fixing instances. She has superb affection for people, and he or she particularly cares for her teammates.