Nick Carraway moves from Minnesota to Long Island in 1922. His neighborhood, West Egg, is made up of"New Money" rich people. Despite being surrounded by garish mansions, Nick lives in a small, rental home.
Nick's next-door neighbor is Jay Gatsby, who is extremely wealthy and lives in a huge mansion. Every Saturday, he throws extravagant parties at his mansion.
One day, Nick drives out to East Egg (where the "Old Money" rich people live), to have dinner with his cousin, Daisy, and her husband Tom.
Nick also meets a woman named Jordan Baker, a professional golf player. The two of them start a romantic relationship. Jordan also tells Nick that Tom is cheating on Daisy with a woman named Myrtle Wilson, who lives in an industrial dumping ground called The Valley of Ashes.
Nick, Myrtle, and Tom go to into the city one day to a party at Tom's apartment, which he keeps for his affair with Myrtle. Myrtle taunts Tom about Daisy, and Tom responds by punching her in the nose.
Nick gets invited to Gatsby's party, where he meets his mysterious neighbor in person. Jordan is also at the party, and she tells Nick about Gatsby