In 1955 Tay Ninh, the National United Front is established and gives Ngo Dinh Diem's government an ultimatum: reform or attack. Luan continues to handle his new rise of popularity within sociopolitical circles in South Vietnam. He goes to Da Lat for a vacation, where a meeting between him and a young woman has been arranged.

After a tumultuous arrival and subsequent stay in Da Lat for military training, Luan returns to Saigon a Major in the Presidential Special Forces. He and Thuy Dung continue their relationship. News that Ngo Dinh Diem is opening the Ban Me Thuot's Highland Economic Fair attracts many intelligence and security organizations, whose political purposes vary.

A happy couple is suddenly separated when one of them is arrested on charges of espionage and sent to re-education camp.

To keep up with his public guise, Tư Chung considers marriage with his "girlfriend" and tries to flatter some trust out of the CIA advisors who've been eyeing the pair, all the while following new orders to plan and launch an important offensive. The second part of a series based on a real-life organization involved in intelligence activities in South Vietnam before 1975.

Posing as a privileged man working for his wealthy industrialist uncle, Commander of the Saigon Rangers Tư Chung prepares with his comrades for a secret meeting with a coming Vietcong officer, alias "K9". The first part of a series based on a real-life organization involved in intelligence activities in South Vietnam before 1975.

After the dangerous offensive launched on the embassy office in Saigon, Tư Chung and his comrades have to find ways to adapt to rising suspicions from the CIA advisors, as well as dealing with violent repercussions involving someone very dear to him. The third part of a series based on a real-life organization involved in intelligence activities in South Vietnam before 1975.

The year 1968 approaches. Bubbling underneath festive spirits are quiet anticipations of a major escalation of conflict, alongside exciting dreams of a brighter future...that seems so close and yet somehow far away. Tư Chung, tasked with overseeing the joint offensive on supreme headquarters in Saigon at the first moment of the lunar year, prepares himself for the most beautiful and painful of hopes. The final part of a series based on a real-life organization involved in intelligence activities in South Vietnam before 1975.

In Dong Thap Muoi during the days of the Vietnam War, Ba Do, Sau Xoa and their little child live in a small shack in the middle of an abandoned wetland zone. They are entrusted with the mission of maintaining Viet Minh's lines of communication in the area. Daily life goes on as the small family looks out for death from above.

One of the three collaborated movies by Trinh Cong Son (songwriter), Hong Sen (director), and Nguyen Quang Sang (novelist). The other two are "Mùa Gió Chướng" and "Cánh Đồng Hoang".