(The sequel to 'The Hunger Games')
Katniss has, without knowing it, rebelled against the system of the Hunger Games when she had to fight to the death after volunteering for her sister in a random draw. Now, she has to go back to the arena and fight to the death with twice as many opponents, and only one person can win. She has to prove to the President Snow she is madly in love with the other victor from her district 12, Peeta, and that is the only reason why she rebelled against the Games. And, of course, survive. She starts uprisings in Panem, and people everywhere want to form a rebellion against the Capitol. Katniss suddenly has too much responsibility on her shoulders, but she has to pull through in order to keep her family and Peeta safe from the Capitol. (I'd reccommend reading 'The Hunger Games' before 'Catching Fire.'