Nick gets on the train with Tom and they get off in a desolate town that is by East & West Egg.
Tom makes Nick meet a mechanic named George Wilson and after George leaves Tom introduces Nick to the wife name Myrtle who Tom is having an affair with.
Later in the night, there is a party at Tom & Myrtle's apartment in New York. Nick meets Myrtle's sister Catherine & a couple who lives downstairs. In that night everyone gets pretty drunk including Nick.
Tom & Myrtle later get into a very heated argument where Tom yells at her for bringing up Daisy's name into the conversation. Myrtle doesn't care and taunts Tom with Daisy's name.
Tom gets really angry at Myrtle and breaks her nose causing the girls to run with her to the bathroom to help her.
Nick is shocked and repulsed with the behavior that he decides to leave the party and ends up taking the 4 A.M. train back to Long Island.