At the hospital, three brothers meet at the bedside of their mother in a coma. To pass the time, they discuss the merits and pleasures of marital fidelity and infidelity. The conversations of the two youngest advance as the days go by in increasingly juicy details and fantasies, which will push them to act against the morals and more solid values ​​of the eldest.

Élevé par des parents parfaits dans une banlieue proprette, frère cadet d'une fille à qui tout réussit et flanqué d'un ami tombeur, le pauvre Thomas se sent bien ordinaire. Alors qu'il tente désespérément de terminer ses études en architecture avec succès, le jeune homme rencontrera Audrey, une belle ténébreuse qui lui donnera des ailes. Évidemment, le bonheur n'est jamais simple et la vie peut être parfois cruelle...

Nick Hart is a struggling American artist who lives amongst the expatriate community in 1920s Paris. He spends most of his time drinking and socializing in local café's and pestering gallery owner Libby Valentin to sell his paintings. He becomes involved in a plot by wealthy art patroness Nathalie de Ville to forge three paintings. This leads to several run-ins with American rubber magnate Bertram Stone, who happens to be married to Hart's ex-wife Rachel.