Han Tae-kyung (Park Yoo-chun), the presidential guard in the Blue House Guard Room, is a capable, courageous, patriotic man who is fully focused on protecting the comfort of Lee Dong-hui (Sun Hyun-joo), the President of the Republic of Korea. However, a series of recent events have made him feel exhausted. Tae-kyung's father is terminally ill, and the secrets known by the old man have attracted many unidentified people. President Lee, who has a high degree and carries the high hopes of the people, is deeply mired in the special inspection quagmire. His approval rating continues to decline, and Tae-kyung makes mistakes in the security process. After the shooting at the fishing ground, the president was kidnapped and his whereabouts are unknown, and Tae-kyung is subjected to unwarranted suspicion. The huge conspiracy began to close the net, and the events of nearly 20 years ago are inextricably linked to everything at present. Everyone is involved in the dangerous world of power and fame, and Han Tae-kyung is alone, throwing himself into the turbulence...