Captain Maurice de Florimont (Allan Forrest), a French Army intelligence officer, is captured by Arab nationalists while on an espionage mission. His sweetheart Diane Duval (Betty Compson) is also taken prisoner. Both are tortured by Kassim Ben Ali (Otto Matiesen), leader of the Arab nationalists, but they refuse to divulge any information. They are finally rescued by French troops who storm the fortress and kill Kassim.