During the fascist era, Adriana a beautiful young model, becomes a prostitute after a love affair gone wrong. She meets Mino, a partisan who falls in love with her and wants to redeem her.
Sunday is the only day off that house maids use to date the young men who cross their paths: doormen, soldiers, sailors, timid virgins and lurid husbands, or even a doctor.
In the prison of San Vittore there is, among other detainees, a strange type that they call "Il Cavaliere". The latter suffers a conviction for theft and his fellow prisoners have a certain respect for him.
