Middle-aged and divorced, industrial designer Marie (Romy Schneider) is pregnant by her impetuous, alcoholic lover Serge (Claude Brasseur). Choosing to end both the pregnancy and the relationship, Marie reconnects with her ex-husband, Georges (Bruno Cremer), and their teenage son, Martin (Yves Knapp). Meanwhile, a client's whim requires major changes to Marie's current work project, one of which will force her to fire one of her closest friends, Jerome (Roger Pigaut).