"The Nanny Diaries" tells the story of the emotional and often humorous journey of Annie Braddock (Johansson), a young woman from a working-class neighborhood in New Jersey, struggling to understand her place in the world. Fresh out of college, she gets tremendous pressure from her nurse mother to find a respectable position in the business world although Annie would prefer to trade in her blackberry for an anthropologist's field diary. Through a serendipitous meeting, Annie ends up in the elite and ritualistic culture of Manhattan's Upper East Side -- as remote from Annie's suburban New Jersey upbringing as life in an Amazon tribal village. Choosing to duck out of real life, Annie accepts the position as a nanny for a wealthy family, referred to as simply "the X's." She quickly learns that life is not very rosy on the other side of the tax bracket, as she must cater to the every whim of Mrs. X (Linney) and her precocious son Grayer, while attempting to avoid the formidable Mr. X (Giamatti). Life becomes even more complicated when Annie falls for a gorgeous Park Avenue Hottie (Evans), and she's forced to explore her identity as never before.