In the first in a series of four films featuring the character of transport pilot, Brass Bancroft, a former U.S. Navy pilot, is hired by the U. S. Government to get needed evidence against an alien-smuggling gang operating along the Mexican border. In order to get him inside the gang, he is jailed, and he gains the confidence of one of the gang members and, after they make a set-up escape, Brass is accepted into the gang as a pilot. Working from inside the gang, led by Jim Cameron, Brass, with the aid of his pal Gabby Watters and Secret Service agent Saxby, is instrumental in bringing the gang to justice.
—Les Adams <longhorn1939@suddenlink.net>