After many years of rambling across Europe the aging Giacomo Casanova is impoverished. He wants to return to the Republic of Venice but he doesn't dare going there directly because he was a fugitive when he left. While he tries to find a way to get a pardon he meets a young lady named Marcelina. The more he shows his affection, the more ostentatiously she rejects him. Even so he doesn't give up on her because her lover Lorenzo has grave gaming debts. In return for the required money Lorenzo tells Casanova about a looming secret rendezvous with Marcelina. Moreover he lets Casanova take his place. Undercover of the night Casanova finally seduces her. Lorenzo later feels his honor was besmirched and demands satisfaction. Casanova kills him in a duel and then goes home to Venice.
Alain Delon
as Casanova
Fabrice Luchini
as Camille
Elsa Lunghini
as Marcolina
Wadeck Stanczak
as Lorenzi
Delia Boccardo
as Amelie
Gilles Arbona
as Olivo
Violetta Sanchez
as Marquise
Jacques Boudet
as Abbe
Philippe Leroy
as Emissary
Alain Cuny
as Marquis
Yveline Ailhaud
as The cook
Sarah Bertrand
as 1st Woman