The rebellious daughter of an army general gets involved with a Communist agitator, mainly to annoy her father. He arranges to have her kidnapped and taken to Mexico--hoping that she will forget her "Red" boyfriend--by a young, handsome soldier named Jeff who, while somewhat of a goof-up, the general believes is still better for her.
Four "Picture Brides", from New Orleans, arrive in the Brazilian jungle on a riverboat, brought there to marry workers at Lottagrasso, a remote mining site of the Standard Diamond Mines. Also on the boat with the four "mail-order" brides (Americans Mame Smith, Flo Lane, and Gwen from England and Lena from Europe) is Mary Lee, a frightened and innocent girl, who has come to see the mine's brutal supervisor, Von Luden, about a job.
Bradford Vinton falls in love with a girl singer from the slums, but his father makes plans to break the relationship; when the plans fail, he disinherits his son.
