
Burgundy 1728. Old count Antoine d'Eon is overjoyed. His daughter-in-law has finally given birth to a boy and he will at long last be able to transmit his inheritance to his son Pascal. At least this is what he thinks, for Pascal has concealed from his father the fact that his son was ... a daughter, his eighth daughter! Well, enough is enough and Geneviève has no other choice but become a boy first, then a soldier and even the special envoy of Louis XV, King of France, to Catherine II, the Czarina of Russia.
Jacqueline Audry

Simone Valère
la marquise de Pompadour

Jacques Castelot
le marquis de L'Hospital, l'ambassadeur de France en Russie

Gisèle Grandpré
Blanche d'Éon de Beaumont

Bernard Lajarrige
Pascal d'Éon de Beaumont