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...
This film denounces the exploitation of natural resources by certain industries of extraction and transformation. This documentary is considered as the first Brazilian film on this theme.