A young woman is murdered and robbed in broad daylight. A young man is arrested, in possession of some of the jewels of the victim. The passionate protests of his sister arouse the compassion of Za la Mort, who promises to help the girl.
The mental illness affecting young Dario, one of the two sons of the Dominici family living in a council building in Rome, disrupts the lives of all its members.
A playwright, a troop of actors, a director, and the playwright's uncle scheme against each other for their own interests regarding the success or failure of the play