For a three-act plot analysis, put on your screenwriter’s hat. Moviemakers know the formula well: at the end of Act One, the main character is drawn in completely to a conflict. During Act Two, she is farthest away from her goals. At the end of Act Three, the story is resolved.
Act I
The Younger family awaits a check in the mail. This Holy Grail will fulfill their respective dreams.
Act II
Lena announces she’s bought a house in a white neighborhood; a totally-not-racist-at-all (right…) representative of the neighborhood shows up and offers more money for them to not move in.
Act III
Walter gives in to the racism and then takes it back at the last second. The family prepares to move in to their new home.