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 Bobs buddies Muggsy and Bilgey go to a café and there Don falls for Nina a singer in love with Bob Bob doesnt know this and thinks she is Garccias 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 Hamids 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