Russ Kane obtains work as a pilot in the airmail service with the purpose of robbing the mails. However, during his training period at the Reno field, he becomes imbued with the spirit of the service and dedicates himself to getting the mail through. Russ is forced to make an emergency landing near a ghost town, where he meets Alice Rendon and her invalid father, who is badly in need of medicine. Russ repairs his plane and promises to return on the following day with the elder Rendon's medicine. Making good on his promise, Russ returns, carrying with him a valuable mail shipment and his friend, Sandy. The plane is attacked by two planes belonging to a gang that smuggles dope and aliens across the Mexican border. Sandy makes a parachute jump with the mail sack, and Russ maneuvers his craft so that the pursuing planes are forced to crash. Russ then lands his plane, only to discover that the Rendons have been captured by three escaped convicts. Russ manages to bring the men to justice, winning the gratitude and love of Alice. Sandy realizes the crowning ambition of his young life and delivers the mail.—AFI