Tim and Kate Welch are seemingly the last middle-class family in the exclusive neighborhood of Brooklyn Heights, New York. Tim is a popular history teacher, and an ordinary guy. Kate is not ordinary, but she aspires to be. Brought up by a hippie mother, Kate stays home with their two young sons trying to be the responsible parent she never had. But their neat and tidy world is turned upside down when Anna Brody --- beautiful, wealthy and impulsive --- moves into the most expensive brownstone in Brooklyn, and draws Kate and Tim into her world.