Two violators of the military service law are incorporated as soldiers recently arrived from Europe and proposed to integrate a group that will operate in a jungle region, for which they have to prepare for difficult survival missions.
Luisa discovers in the briefcase of Alberto, her husband, a fiery love letter, in which he is portrayed as an impetuous lover.
After a series of doublecrosses involving stolen diamonds, a gangster's babe in Argentina flees to Mexico; she's kept by a druggy, decadent painter and then falls in love with his brother.