Nguyễn Trung Thu

Luan is entrusted by Diem-Nhu to become Commander of the Great Flood Operations and also Commander of Binh Duong's Security Corps, with full authority to take action to rectify the situation in this province. The Liaison Department of the Republic of Vietnam, under the support of the United States, carries out plans to send commandos to North Vietnam for reconnaissance. If the commandos successfully infiltrate, they will respond to South Vietnam with a tango. Plans Tango No. 1 and Tango No. 2 failed. What will become of plan Tango No. 3?

Luan returns to Saigon and becomes a Major in the Presidential Special Forces. He and Thuy Dung continue their relationship. News that Ngo Dinh Diem is opening the Highland Economic Fair held in Ban Me Thuot has attracted the attention of many intelligence and security organizations, whose political purposes vary.