After the uprising of the people, the government decided to segregate the country into 12 districts. For their crimes, each one would offer a male and female contestant to compete in the Hunger Games, where 24 children between the ages of 12-18 would compete to the death
In District 12, Katniss is comforting her sister Prim before the reaping where the contestants will be chosen. Prim is worried that it will be her.
It's ok Prim. Your name has only been in there once. They're not going to pick you.
At the reaping Katniss volunteers in her sisters place
For the next couple weeks, Katniss prepares for the Games through training.
When the Games start Katniss runs off and survives using her prior experience hunting in the woods when she was living in District 12
Later in the Games, Katniss meets up with Peeta, the other contestant from 12. From there they start to help each other, and Katniss for their survival puts on this romantic act with Peeta to gain sponsors
It's going to be ok Peeta. We can win. I "love" you