The French Foreign Legion is the setting for this episodic adventure yarn. When military doctor Andre Morand is wrongfully convicted of a murder, he escapes the firing squad with the help of his friend, Jean. Taking refuge in a mission run by the uncle of the beautiful Margot, Andre agrees to care for the sick there. After professing his love for Margot, he learns that she is engaged to Jean, who is now sick. Vowing to return to aid Jean and others, Andre prepares to face death, but a series of events may turn things in his favor.
| Actor | Role |
|---|---|
 Victor JoryDr. Andre Morand/Paul Vernay | Dr. Andre Morand/Paul Vernay |
 Loretta YoungMargot Lesesne | Margot Lesesne |
 Vivienne OsborneRena Corday | Rena Corday |
 David MannersCaptain Jean Fabien | Captain Jean Fabien |
 C. Henry GordonCaptain Radak | Captain Radak |
 Herbert MundinBimpy | Bimpy |
 Émile ChautardFather Carmion | Father Carmion |
 J. Carrol NaishSalazar | Salazar |
 Robert BarratMaj. Bertram | Maj. Bertram |
| JJack ByronShip Captain | Ship Captain |
 Mathilde ComontNana | Nana |
 John DavidsonKasim-Native | Kasim-Native |
 Bela LugosiMilitary Prosecutor | Military Prosecutor |
 Francis McDonaldOfficer Reading Verdict | Officer Reading Verdict |
 Paul PorcasiBartender | Bartender |
 Dewey RobinsonColonel on Military Court | Colonel on Military Court |
 Leonid SnegoffArab with Wounded Hand | Arab with Wounded Hand |
 Harry StrangMedical Aide | Medical Aide |
 Akim TamiroffAdjutant | Adjutant |
 Hans Heinrich von TwardowskiAndre's Defense Counsel | Andre's Defense Counsel |
 Leo WhiteRena's Club Dance Director | Rena's Club Dance Director |