He explains that he doesn't enjoy his time at Pencey Prep and that most of the boys there are a bunch of "phonies." So instead of staying until Christmas vacation, he decides to leave on his own a few days before the break. He travels to New York, where his parents and sister live, but doesn't go home because he doesn't want them to know that he got kicked out just yet. Instead, he searches for a cheap hotel to stay at for the time being. He gets extremely bored and lonely so he calls different people to meet up with.
After a while he decides to go home to visit his little sister Phoebe. (His older brother D.B is a writer and lives in Hollywood.) Holden sneaks into his apartment and goes into D.B's room because that's where Phoebe sleeps. Holden stands there for a short time and then decides to wake Phoebe up. She tells him that their parents are at a party somewhere and won't be back until much later. Then Phoebe guesses that Holden got kicked out of school but she promises that she won't tell their parents.