A scientist who have discovered how to turn salt water into petrol dies before he has revealed his formula. By mistake it's assumed that his assistant knows it although he does not.
Fernandel
as Vincent Fleuret
Robert Le Vigan
as le professeur Léonard Bontagues
Meg Lemonnier
as Renée Lancel
Jacques Varennes
as Octave
Thérèse Dorny
as Madame Noblet
Jean Toulout
as Le président du tribunal
Marie-Josée Maffei
as Angélica
Paul Azaïs
as P'tit Louis
Henri Arius
as Trapu
Georges Lannes
as Cartier
Pierre Feuillère
as Riquet
Léon Bélières
as Monsieur Noblet
