Noronha is a low middle-class civil servant who lives with his frustrated wife Gorda and their three elder daughters. The youngest one, virginal Silene, is unexpectedly sent back home. Noronha discovers she has been expelled from boarding school for having killed a female cat and her seven newborns in a hysterical fit. Many dark family secrets will emerge from that episode leading to tragic events.
While touring in Italy, a recently-widowed American opera singer has an incestuous relationship with her 15-year-old son to help him overcome his heroin addiction.