Stanislas Dubois is the manager of a successful advertising agency. One day, he comes up against an imposing woman who foists on him a cumbersome painting by Cézanne.

Jean Maraisas Stanislas
Christian Marinas Lecanut
Geneviève Pageas Ursula Keller
Noël Roquevertas Commissioner Mouton
Jean Gallandas Colonel Derblay
Yvonne Clechas The lady on the train
Pierre Tornadeas An Inspector (uncredited)
Max Montavonas The hotel receptionist (uncredited)