Since the end of the first story, Katniss has a peaceful relationship with his mother (logical continuation of his teenage crisis). Gale, too inconvenient as became a close "cousin". Peeta and are not lovers, and it must replay the "comedy" of love to prove that she did not want to defy the Capitol and so fuel the risk of rebellion in the districts.
At first you think, "owl", we will focus on the background, the establishment of revolt and to lighten the story, develop the love triangle and the ambiguity of Katniss. Then finally, it makes quickly realize that the revolt is not ripe. This is the second volume of a trilogy and we will have the right to a second episode of the game in the arena, with a big surprise (really?). The game, moreover, is sufficiently different from the first to remain interesting.
Even flowing style, very accessible, well own dead, actions and feelings and evolution of the overall situation towards total revolt, that makes you want to read the last book: Hunger Games, Book 3: The Revolt
To the downside, the book, for me, lacks a bit of sadism and dark (see the background), but after all, we must not forget that we are in a youth setting.