Nicole and Jean-Marie Kunstler are a seemingly happily married couple who run a dry cleaning business in the small French town of Belfort. Their respectable bourgeois existence is based on hard work and family values. All of this changes dramatically, however, after they see a brother-sister drag act performing at a local club. A series of coincidences leads the male half of the duo, Loïc, to come live and work with the Kunstlers, creating a ménage à trois that sets tongues to wagging. The gossips of Belfort assume -- and rightly so -- that the handsome stranger is sleeping with the wife of his boss. But what is really happening behind closed doors surpasses even their wildest imaginings. Not only does Jean-Marie condone his wife's dalliance in the name of sexual fulfillment, but he himself is strangely attracted to his young protégé.