November 1972. At the court of Bobigny, an extraordinary trial shakes all of France. Marie-Claire Chevalier, 16 years old, is accused of having had an illegal abortion. At the bar, her mother and all the women who helped her. Their lawyer, Gisèle Halimi, makes a crazy, senseless bet: she asks them not to plead guilty. Gisèle will do what has never been done before, she will accuse and attack the law, at the risk of losing everything.