The inhabitants of a small provincial town are requisitioned to take part in the French army's major maneuvers. A foreign spy takes advantage of these maneuvers to steal secret documents. The pursuit and capture of the spy and his accomplices are successfully carried out by all those taking part in the maneuvers.
as Sonia Brévannes
as Annie Desforges
as Pierre Dumans
as Roger Kervec
as Maurice Favier
as Guy Lormoy
as Jacqueline Desforges
as Lormoy
as Professor Desforges
as Jean Lormoy
