In the border town of
Hernandez, New Mexico, undercover agent Mark Owens (Charles Quigley) is assigned to help the
United States Border Patrol break up a well-organized band of smugglers. Hernandez also has a reputation for "quick marriages", just across the border in Mexico, so Mark soon signs on as a pilot on "The Honeymoon Express." "Hot Cake Joe" (
Herbert Heywood), who runs a sandwich stand, is an informant for the smugglers and recognizes Mark is a "
G-Man". Reporter Nancy Rawlings (Rosalind Keith), looking for a good story, wants to feature Mark as the pilot of the marriage service, but he is very reluctant to be photographed. She begins to suspect that flying is only a cover for smuggling. When Nancy sees him accepting money from cafe owner Kurt Feldon (
Russell Hicks), whom she is sure is the head of the smugglers, her suspicions are confirmed. When Joe tells Feldon that Mark is an undercover government agent, he orders "Blast" Reardon (
Marc Lawrence), one of his gang, to kill Mark and arranges for Mark to fly "Blast" and his girlfriend to Mexico to get married. Hoping to catch the smugglers in the act, Nancy hides in Mark's aircraft but, along with Mark, is captured when the aircraft is forced to land at the smugglers' hideout, the same place that Mark had photographed from the air earlier. Nancy's editor becomes worried when she does not show up at the newspaper and calls the Border Patrol, who send a rescue team using Mark's aerial photographs of the hideout. Nancy and Mark manage to escape in his aircraft, but are quickly followed by "Blast". The Border Patrol intercept "Blast" and shoot him down in an aerial dogfight. The smugglers attempt to make a getaway by car, but are also intercepted and gunned down by the Border Patrol. After realizing that they are attracted to each other, Mark and Nancy decide to get married. ==Cast==