Nick moves to West Egg, Long Island from the Midwest, which is what starts the story in the first place. He also buys a house next to Gatsby, which is influential in the rest of the story.
Gatsby Reunites With Daisy
We've met before.
This scene is important because our first glimpse of Gatsby is a mysterious one. It sets the stage for the mysterious Gatsby for the rest of the book.
Nick is invited to go to Gatsby's party, which is strange in itself because nobody is invited, they just go. There, he meets Jordan Baker, and Gatsby himself. This is the first time that Nick and Gatsby meet. It eventually grows into a friendship between the two as the story goes on.
Gatsby's and Mr. Wilson's Death
Here Lies Gatsby
It has been many years since Gatsby last saw Daisy. He has Nick invite her to his house, where Gatsby will show up unannounced. This is important because this is the moment that Gatsby has been working toward since last seeing Daisy. It is finally coming to fruition.
I certainly am awfully glad to see you again.
While driving home from the city, Daisy and Gatsby hit Myrtle Wilson, Tom's Mistress. Daisy was driving. Gatsby's willingness to take the blame for Daisy shows his love for her.
Extremely upset over his wife's death, Mr. Wilson is determined to find her killer. He shoots Gatsby and then kills himself. This represents the "death" of Gatsby's dream that he built his life around. Nick is left to make funeral arrangements.