Trying to do a summarize of a plot

Hi, now I will see if I am able to explain the plot of a story, The Hunger Games.
So let's go.
The plot takes place in Panem, a nation in post apocaliptic situation in that there are twelve districts unde the Capitolio's control. The people of the districts are poor and in the Capitolio the people is ever going into a partyes and they live in a constant carnival. In the past there were thirteen districts  and they made a revelion against the Capitolio. The Capitolio won this war and destroyed the thirteenth district. appart from this the lider of the Capitolio, for punish the districts, invented the hunger games, an event in wich one boy and one girl between 12 and 18 years old are selected by lot and they must fight in a type of big stadium controlled by the Capitolio  among themselves until only one is left alive. In this story there is a girl that remplaces his little sister for became a tribute of the 74th Hunger Games. This girl is called Katniss  Everdeen, she is great and brave and she survives until the end with the help of Peeta Melark, the tribut boy of his district and she falls in love. Then tere are only two and one of they have to die. But she is really intelligent and deceived the arena's controllers making they thin that she and Peeta will kill themselves and the controlers are obligated to accept two winners.
The people of the districts interpretes this fact as a simbol of rebelion and now the problem becomes bigger.