Katniss sister is chosen by the capital to represent their district, but Katniss volunteers as tribute for her place because she was worried about her sisters safety.
Crossing the First Threshold
Katniss and Gale run away because of bad thoughts about being chosen for the hunger games.
Tests, Allies, and Enemies
Haymitch, a previous winner of the Hunger Games becomes Katniss' mentor. He gives her advice on how to survive during the games and teaches her how to gain sponsers.
She goes into the arena and puts on a good show for her sponsors and family/friends back in district 12.
Before the games, Katniss meets her other opponents for the first time and realizes that the tributes in districts 1-4 are trained well and could cause her hard times. She also gains possible sponsors after showing off some of her skills