A modern-day retelling of the Electra story, the film centers on the incestuous relationship between a young Italian woman (Cardinale) and her brother (Sorel), on her return to their ancestral home of Volterra.

On the eve of an official ceremony commemorating the death of her Jewish father in a Nazi concentration camp, she revives a sexual involvement with her brother, which troubles her naive husband.

The incestuous siblings determine to wreak revenge on their mother and stepfather, who supposedly denounced their father to the Nazis.

The Italian title, culled from the poem "Le ricordanze"[1] by Giacomo Leopardi, could be translated as "Glimmering stars of the Great Bear", and has a strong resonance with the movie's plot: Vaghe stelle dell'Orsa, io non credea Tornare ancor per uso a contemplarvi Sul paterno giardino scintillanti, E ragionar con voi dalle finestre Di questo albergo ove abitai fanciullo, E delle gioie mie vidi la fine.(...)

English translation: Glimmering stars of the Great Bear, I never thought I'd be back to see you Shining down on my father's garden, Nor talk to you ever again from the windows Of this house where I spent my childhood And saw the last of my happiness vanish.(...)