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.

Victor Jory
as Dr. Andre Morand/Paul Vernay

Loretta Young
as Margot Lesesne

Vivienne Osborne
as Rena Corday

David Manners
as Captain Jean Fabien

C. Henry Gordon
as Captain Radak

Herbert Mundin
as Bimpy

Émile Chautard
as Father Carmion

J. Carrol Naish
as Salazar

Robert Barrat
as Maj. Bertram

Jack Byron
as Ship Captain