The independently-minded daughter of lower-middle class French shopkeepers, Brigitte, one of three sisters, refused to marry the father of her child when she became pregnant. In this film, she reminisces about her family life beginning when she was about five years old, up to the present when she is in her early 20s. Of her two sisters, one has a nervous breakdown and the other one becomes something of a baby factory. Colorful anecdotes of her eventful life lend additional depth to her insights.

Starting as an investigation, the film begins with the discovery of a murdered young woman. Gradually we go back in time to realize that this crime is altogether the logical continuation of a philosophy of life where neither sex nor death are taboo, and where a lust for pushing limits meets it ultimate conclusion.