It is about this young guy named Will Hunting (Matt Damon), who grew up in South Boston and had a horrible childhood. His parents died and he went through a couple foster homes where he got beaten and it pretty much just wasn't a good time for him. But, in the movie, he's grown up and he's working as a janitor at MIT. Professor Gerald Lambeau (Stelland Skarsgard) leaves a proof on a blackboard in the hallway one day for extra credit for his students and Will solves it at night when no one is there. That's when you find out that Will is basically a genius. No one knows who is solving the proofs until one day the professor sees him standing at the blackboard and he tries to ask his name but Will just walks off and tell the professor to "'f' himself."
The professor finally tracks him down and tries turn him into his prodigy. But Will would really rather spend his time with his friends from the rough neighborhood he grew up in. Professor Lambeau set up several interviews for Will, which he almost never went to, so that he could get a good job making like 80,000 just starting out. But he kept turning them down, and making excuses. One friend in particular, Chuckie Sullivan (Ben Affleck), who Will grew up with, and is basically his best friend, tells Will that he would give anything to have what he had, and to have an opportunity to get out of the tough South Boston neighborhoods.
More towards the beginning of the movie, Will is arrested for battery, and Professor Lambeau has to bail him out of jail, and one of the terms to him being released to the professor's care is that he has to see a therapist once a week. Which is where Dr. Sean Maguire (Robin Williams) comes in. He helps Will work out all his childhood issues and everything, and helps him find the right direction for his life. Dr. Maguire was Professor Lambeau's roommate in college, and they have a very tense relationship. They get into a couple fights throughout the movie, over Will and other things.
There is one other character in the movie that plays an important role in Will's life, he name is Skylar (Minnie Driver). Will meets her in a Harvard bar when Chuckie tries to talk to her and her friend and this other guy comes up and starts trying to make Chuckie look like an idiot. So Will comes up and starts pulling all of this historical and political philosophy out and makes the other guy look like a fool, before they leave the bar Skylar gives Will her number and they hit it off or whatever. Skylar has a lot of money though, and Will doesn't seem to be able to handle that really.. They end up breaking up at the end and its supposed to be all sad.
If you really want to know what happens, then I guess you should watch this movie. It really is good, even though it's so old. It has some sad parts but overall it's not bad.
