 David and Dana Hurst share a dental practice in Westchester County, a marriage, and three young daughters. Noise seems a constant in the household, and the youngest doesn t want her dad out of sight. Dana s in the chorus of a community opera production of  Nabucco,  and when David pops backstage before curtain to give her a good-luck charm, he sees her with another man, clearly infatuated, maybe in love. As David sorts out what to do, in imagined conversations with an unhappy patient, his grief leads to aberrant acts, and violence seems close at hand. A bout of the flu that runs through the family brings things to a head.