Major Paolo Altieri of the Paratroopers Corps foils the kidnapping of child, but becomes the victim himself of a violent assault by the bandits. He realises that the criminals have used an experimental machine gun that's used only in his own Corps. Altieri begins to take part in police raids on criminal activities, and ultimately discovers a conspiracy to overthrow the democratic government.

Jean, Karl, George y Hamida realizan prospecciones en el Sáhara para una compañía petrolífera. Unos saboteadores que irrumpen en el campamento matan a George. Sus amigos dejan todo para salir en su persecución, pero al ser sometidos a un chantaje de los saboteadores, los acontecimientos tomarán un rumbo inesperado.