Leon Rollo whose nickname is "Patate" is an inventor adored by his wife and is daughter. He is mostly happy but his best friend Noël seems to succeed in everything he undertakes... Patate become increasingly jealous of this incredible luck.

Reparto

Jean Marais

Noël Carradine

Danielle Darrieux

Edith Rollo

Pierre Dux

Léon 'Patate' Rollo

Sylvie Vartan

Alexa Rollo

Anne Vernon

Véronique Carradine

Jane Marken

Berthe

Noël Roquevert

Monsieur Michalon

Hubert Deschamps

Adrien

Jacques Jouanneau

Marcel

Henri Virlogeux

Professor Bichard

Mike Marshall

Jean-François de Baylac

Laurence Badie

Jeannette

Daniel Ceccaldi

Michel, bartender

François Charet

Bernard

Julie Dassin

Middle school girl