Lee Woon-il, the founding chairman of Woonjoong Co., Ltd., which encompassed casinos, liquor, construction, and loan sharking, and his successor, Chairman Lee Ju-hwa. The sudden deaths of these two men, both father and son, on the same day, spark a power struggle within Woonjoong. This is the story of Nam Dae-gyun, the director of Woonjoong, who takes the lead in the company's power struggle, and Kim Do-jin, who is unknowingly drawn into the conflict at the request of a friend.