Professor Louis Delage is a kidney transplant specialist. He is so good in his field that his peers nickname him the "great man". But one day, one of his patients die during surgery and Delage starts doubting. Is he actually such a great man? To fight desperation he decides to take in the deceased child while devoting more time to Florence, his hitherto neglected wife.

Pierre Fresnay
as Professor Louis Delage

Renée Devillers
as Florence Delage

Claire Duhamel
as Catherine Delage

Marcel André
as Doctor Charles Tannard

Nadine Alari
as Yvette

Roland Alexandre
as Jacques Brulages

Pierre Destailles
as Gaston Berval

Michel Vadet
as Doctor Larmy

Christiane Barry
as Jacqueline

Georgette Anys
as Mrs. Berval