Mireille Mathieu, chanter... et rien d'autre

Mireille Mathieu, along with Edith Piaf and Dalida, is part of France's national cultural heritage. The documentary shows the tension between the celebrated and at the same time banished, the ambassador of France in the world, who appears only rarely in her own homeland. Why is Mireille Mathieu, the unusual star, so divisive?