In Chapter 4 of The Great Gatsby, the narrative delves deeper into the enigmatic character of Jay Gatsby through a lunch outing with Nick Carraway. This chapter begins with Nick listing the names of some of the notable guests who attended Gatsby's lavish parties during the summer of 1922, highlighting the extravagance and allure of Gatsby’s world. As Nick recounts the various personalities that frequented Gatsby's mansion, he emphasizes the eclectic mix of wealth and social status that characterized the Jazz Age.

The chapter takes a pivotal turn when Gatsby invites Nick to join him for lunch in New York City. During the drive, Gatsby attempts to dispel the rumors surrounding his background by sharing fragmented pieces of his life story. He claims to be the son of wealthy parents from the Midwest who are now deceased, and he describes his time at Oxford as a privileged experience. However, Nick remains skeptical of Gatsby's claims, particularly because Gatsby's demeanor suggests he is trying too hard to convince Nick of his legitimacy.

Their lunch meeting leads them to a speakeasy where they meet Gatsby's associate, Meyer Wolfsheim, a character who is heavily implied to be involved in organized crime. Wolfsheim's presence serves to reinforce the questionable aspects of Gatsby's wealth and connections. Nick observes the way Gatsby interacts with Wolfsheim and begins to piece together the darker elements of Gatsby's life, suggesting that his wealth may not come from entirely lawful sources.

As they continue their conversation, Gatsby reveals his deep-seated love for Daisy Buchanan, Nick's cousin. He discloses that they were once romantically involved before Gatsby went off to fight in World War I. This revelation marks a significant turning point in the narrative, as it establishes the central motivation behind Gatsby’s extravagant lifestyle: his desire to win Daisy back. Gatsby's obsession with Daisy becomes apparent as he discusses her with a mixture of reverence and longing.

Nick learns that Gatsby remains fixated on the past, believing that he can rekindle their former love. He expresses a desire to have Nick facilitate a reunion between him and Daisy, indicating that Gatsby has never truly let go of their relationship. This chapter effectively deepens the reader's understanding of Gatsby's character, portraying him as a tragic figure driven by an idealistic vision of love, ultimately foreshadowing the conflicts that will arise from his obsession.

In summary, Chapter 4 serves as a crucial exposition of Gatsby's character, illustrating the complexities of his wealth, the darkness behind his rise to prominence, and the passionate but doomed love he harbors for Daisy. The chapter sets the stage for the unfolding drama of their reunion while simultaneously painting a vivid picture of the social milieu of the 1920s.