Cass and Stan are hired to transport a deputy and a condemned murderer named Gordon en route to another prison. Once aboard, the deputy shows his true intentions, he’s not a lawman but Gordon’s accomplice and wants to set him free. A scrap ensues and a gunshot punctures the fuselage, the airplane totters down to doom.

A seemingly routine flight carrying convicted murderer Gordon Locke and the deputy sheriff escorting him from northern California to imprisonment becomes a hazardous one for Cass and Stan when the 'deputy" proves to be Locke's confederate who has engineered an escape plot that unfolds after takeoff. When the plane crash lands, Stan finds himself stranded and with a sprained ankle.