An undercover spy of the Revolution approaches a ruthless guard at Côn Đảo prison to extract information.
Director
Writers
Nguyễn Huy Khánh, Vũ Hạnh
Teacher Thành
Tuyết Mai
Major Cường
Hai Ân
Thắm
Tuyết
Lt. Col. Chuân
Governor of Côn Sơn
Advisor Kent
Nhung
Thoàn
Lieutenant Công
