Set in Hanoi in 1954, as French colonial forces prepare to withdraw from Vietnam, the film follows a group of Vietnamese police intelligence agents operating undercover behind enemy lines. Risking their lives to gather vital information and protect the capital, these courageous operatives must navigate a dangerous world of espionage, deception, and divided loyalties. As the struggle for Hanoi's future intensifies, they face difficult choices between personal safety and their duty to their country.
| Actor | Role |
|---|---|
 Minh TríNghĩa / Captain Nhân | Nghĩa / Captain Nhân |
| TTrịnh LiễuLt. Col. Bernard | Lt. Col. Bernard |
| BBich VanRosa | Rosa |
 Ái VânMonique | Monique |
| KKlaus-Peter RasemSchmidt (“X-mit”) | Schmidt (“X-mit”) |
 Hoàng YếnNghĩa’s mother | Nghĩa’s mother |
| MMạnh SinhNot listed | Not listed |
| CChu Xuân HoanNot listed | Not listed |
| VVăn PhứcNot listed | Not listed |