Set in the 1970's, Baek Gi Tae is an ambitious man, who thirsts for wealth and power. Jang Gun Young is a prosecutor with animalistic instinct and fearsome tenacity. Facing a major incident, Jang Gun Young throws his everything to stop Baek Gi Tae. The people around them include Lobbyist Choi Yu Ji, Investigator Oh Ye Jin, Bae Geum Ji and Chief Secretary Chun Suk Jung.