The Gov. (aka the capitol) sucks and wants to punish everyone for rebelling like ages ago, so they make them send two kids to die every year.
Only they don't just die, they have to kill all the other kids first.
Only they aren't just fighting the other kids, they also have to avoid the shit the "game makers" throw at them. This includes flaming balls of fire, freakish giant dog things, and evil hallucinogenic wasps.
Enter our main characters, Katniss and Peeta. Yes... Peeta like pita the bread thing. He's also the son of a baker... *sigh*
Katniss volunteers to go and die because her sister was picked and it would suck to watch your sister killed on tv. Although, you know... now her sister has to watch the same thing.
So Katniss and Peeta are the tributes for district 12. They go to the capitol, get paraded around in a pageant of sorts, and go off to the arena to kill each other. Peeta says he loves Katniss - enter romance for the teenage girls - and gets sympathy from the audience.
Lots of fighting and shizz later, there's a rule change that two people from the same district can win. Katniss and Peeta team up and end up being the last ones standing. They're all set to win when the head honchos pull a twist and revoke the rule, hoping one of them kills the other.
Instead they decide to pull a romeo and juliet suicide thing and are stopped at the last minute. They win *yay* and go back to the capitol where there's a celebration. (even though like... 22 kids just died earlier in the story)
The President is pissed off at Katniss for standing up to him with the suicide stunt, which conveniently carries the plot over into the second book/movie.
In all of the middle stuff there was lots of fighting and action (guyz) and hugs and kisses (girls). Aaaand a sort of social commentary on how messed up our society is in terms of war and our rich entitled ways (adults).