Here's a breakdown of the chapter:
* The Reaping: Katniss is chosen as the female tribute for District 12, and the audience sees her panic and fear for her younger sister, Primrose.
* Prim's Volunteering: Primrose, who is too young to be a tribute, steps forward and declares she will take her sister's place. The crowd is stunned.
* Katniss' Reaction: Katniss is overcome with emotion and fear for Prim. She realizes she can't let Prim face the Games, so she immediately volunteers herself as tribute.
* Gale's Response: Gale is furious that Prim volunteered and is also angry at Katniss for volunteering to go back in her place. He understands the danger Katniss is facing.
* The Consequences: The chapter ends with Katniss knowing she has made a life-altering decision and is now facing the Games once again.
Chapter 3 is a pivotal moment in the story as it sets the stage for Katniss' journey into the Hunger Games. It showcases her deep love for her sister, her willingness to sacrifice herself, and the moral complexities of the situation.