Theplotcentersonacouple:Lenaisatalentedobstetricianandgynecologist,andherhusbandSergeyisanactorinaprovincialtheater.Theirrelationshipistenderandclose,buttotallydevoidofsex.LenasuspectsthatSergeyishavinganaffair,butshesufferssilentlywithoutlettingherjealousyshow.Insteadoffindingoutwhatisgoingon,Lenastartscheatingonhimwithrandommen.Slowlybutsurely,Lena'sactsofinfidelityspinoutofcontrol,basicallyre-writingherreallife