A small saver discovers the scam that threatens all subscribers to the "Caution foncière". He embarks on an incredible adventure to recover the funds paid in by his friends, and succeeds in exposing the scandal.

Jacques Dufilho
as Fritz Ducharrel

Michael Lonsdale
as Sergel

Henri Poirier
as Lawyer

Maurice Vallier
as Henri Butin

Guy d'Avout
as Deputy

Robert Berri
as Moaner

Dominique Zardi
as Saver

Gilbert Robin
as Notary

René-Jean Chauffard
as Judge

Jean-Claude Rémoleux
as Pativer