Don Lawson, alias Don Armingo, is a member of the Secret Service who joins a group of smugglers at the Mexican border. As Don is about to make an arrest, the smugglers take flight, kidnapping his sweetheart, Doris Pomeroy, but Carmelita, a tango dancer in love with Don but in league with the smugglers, releases him. However, he rejects her amorous advances, and is forced to escape. Following Doris and her kidnappers in his airplane, he circles above the getaway car and plucks her from the tonneau cover just as it speeds over an embankment.—AFI