Yoo Ha-jin, who was chosen as the best agent by Blackwater, a well-known mercenary firm, for money for start-up funding, was acknowledged for his talent quickly and has been carrying out covert missions throughout the globe. In response to his wife’s appeal for a regular life, he quit his business venture with his pals and became a bodyguard for Daeho Group. He is in charge of managing Choi Joo-myung, the chairman of Dae-ho, in Macau’s slush funds, although it is believed that he stole trade secrets in the process. He is shot by Kang Seung-woo, his superior and fellow employee, and he drowns.