Is improving rapidly with Morhange as its lead soloist; the children are happier, and the faculty less strict — even Rachin begins to loosen up, playing football with the boys and making a paper aeroplane. The Countess, a sponsor of the school, finds out about the choir; they perform before her and others, and Morhange enchants the audience with his solo.
Pierre Morhange (Jacques Perrin), a French conductor performing in the United States, is informed before a concert that his mother has died. After the performance he returns to his home in France for her funeral. An old friend named Pépinot (Didier Flamand) arrives at his door with a diary which belonged to their teacher, Clément Mathieu. They proceed to read it together.
Fifty-four years earlier, Clément Mathieu (Gérard Jugnot), a failed musician, arrives at Fond de l'Étang ("Bottom of the Pond"), a French boarding school for troubled boys of all ages, to work as a supervisor and teacher. At the gate, he sees a very young boy, Pépinot (Maxence Perrin), waiting for Saturday, when he says his father will pick him up.
The boys singing rude songs about him, Mathieu forms a plan: he will teach them to sing and form a choir as a form of discipline. He groups the boys according to their voice types, but one student, Pierre Morhange (Jean-Baptiste Maunier), refuses to sing. Mathieu catches Morhange singing to himself, discovers he has a wonderful singing voice and awards him solo parts on the condition that he behaves.