Sophie is a brilliant student. Encouraged by her maths teacher, she leaves the family farm to attend a science preparatory class. Between new encounters, successes and failures, and faced with fierce competition, Sophie realizes that her dream of joining the Polytechnique represents more than an entrance examination but a true challenge of social climbing.
Sylvie, a nearly sixty-year-old woman, has fallen in love with Michel, a thug she marries in prison. The couple dream of starting again with a clean slate by opening a flower shop. But Sylvie’s son Abel, convinced that Michel will fall into a life of crime, disapproves of this relationship.