Bob Carter, a member of the Foreign Legion, is glad to see his brother, Don, for the first time in ten years but is sorry that Don has joined the Legion. Bob, Don and Bob's buddies, Muggsy and Bilgey, go to a café and there Don falls for Nina, a singer in love with Bob. Bob doesn't know this and thinks she is Garccia's girl, and warns Don to have nothing to do with her. Don disregards the warning and Garcia discovers Nina and Don together and provokes Don into hitting him. Don is arrested and thrown into the company brig. Nina, with the aid of an Arabian sheik, Ul Ahmed, helps Don escape. Bob, Muggsy and Bilgey follow but are captured and taken to Ul Hamid's headquarters. The sheik tortures Don to force Bob to work some captured machine guns for him. Ah Hamid and his tribe attack the fort, but Bob manages to turn the machine guns against his captors, and the fort is saved.
"Don" (Ben Alexander) joins the French Foreign Legion where he is teamed up with his brother "Bob" (Ralph Forbes) whom he hasn't seen for many years. They go for a drink where the newcomer falls for local singer "Nina" (Hala Linda) but she has her eye on his unwitting sibling. In any case, "Bob" warns his brother that she is the girlfriend of their "Sgt. Garcia" (George Regas) and so he should leave well alone. Undeterred, he presses his suit and when the sergeant finds out, "Don" is chucked into the brig. With the help of the dodgy Sheik "Ul Ahmed" (Roy D'Arcy) he manages to escape, but it's all a bit fireplace and fire as it soon transpires that the helpful Sheik has a treacherous agenda of his own. It's only an hour long, and there is plenty going on for most of the time. It is just that the acting is really pretty wooden - especially from Hala Linda, and the production standards suggest a very small budget and a very tight filming schedule. D'Arcy steals his scenes as the devious Sheik, but otherwise this is entirely forgettable.