Ernesto, a seven-year-old boy who has the body of a thirty-year-old man, decides, upon attending his first day of school, that he no longer wishes to attend, because he does not wish to be taught matters that he does not know.
Axel Bogousslavsky
as Ernesto
Daniel Gélin
as Enrico
Tatiana Moukhine
as Natasha
Martine Chevallier
as Nicole
André Dussollier
as Le directeur d'école
Pierre Arditi
as Le journaliste
