Jockey Jack has a bill open with a gangster just released from jail. He somehow manages to parry the gangster's knife attack backstage at a theatre and the latter ends up dead being put into a double bass case. A day later the gangster mysteriously has disappeared, but it turns out that he was carrying a bet ticket for a horse race now worth over a million. A turbulent run for the money begins.
as Jacques, le cousin de Jérôme, dit « Jockey-Jack », petit truand
as Jérôme Martinet, contrebassiste et comédien
as Rockie « la Braise », femme entretenue
as L'oncle Absalon, le savant farfelu
as Jo Arengeot, un petit truand sortant de prison
as Gratiopoulos, le milliardaire à la soirée
as "La Douane", un complice de Jo
as Le général Frédéric Cédille
as Riton « Pommes-Chips », le petit truand assassiné
as La comédienne qui joue Sonia
as Une invitée de Christine
as Christine, la maîtresse de maison
as La comédienne qui joue la comtesse Natacha
as Dorothée, l'ex-collègue musicienne de Jérôme
as L'inspecteur de police
as Léon, le concierge du théâtre
as Le pasteur
as Un accessoiriste
as Émile, le barman
as Un accessoiriste
as Le régisseur machiniste du théâtre
as Pierre Michon, comédien
as La tante Olphie (voix)
as Palmyre, la folle
as Un accessoiriste (non crédité)
