The Jacques Brothers, their temporary replacements, Yves Gérard and his troupe, as well as a famous movie star looking for a new partner, Evelyne Dorsey, are causing disruption at the "La Rose rouge" cabaret, the most famous cellar in Saint-Germain-des-Prés, to the delight of regulars.

Antoine is a violinist in love with sweet Sophie. Problem: his sweetheart is the daughter of the master of the municipal harmony, a stubborn man who swears only by the brass. Never mind: Antoine decides to ask him for his daughter's hand and to win his place at the orpheon. Will the two men be able to get in tune?

A little girl named Alice dreams about going through the looking-glass and becoming a queen in the mirror reality.