Robert Lafleur (Scaramouche) is an actor in 18th century France who spends most of his time, including when he should be on stage, light-heartedly having love affairs and generally enjoying life. One day, a marquis visits him and asks him questions about the birth mark on his shoulder...

Gérard Barray
as Robert Lafleur alias Scaramouche

Michèle Girardon
as Diana - Souchil's ward

Gianna Maria Canale
as Suzanne

Alberto de Mendoza
as Roger - Marquis de la Tour

Yvette Lebon
as Alice - Madame de Popignan

Xan das Bolas
as Gino

Irán Eory
as Jacqueline - Pierrot's Girl-Friend

Antonio Gradoli
as

Helga Liné
as (uncredited)

George Rigaud
as Duc de Lacoste