Several ordinary high school students go through their daily routine as two others prepare for something more malevolent.

A teenage skateboarder becomes suspected of being connected with a security guard who suffered a brutal death in a skate park called "Paranoid Park".

Headstrong yet aimless, Will Hunting has a genius-level IQ but chooses to work as a janitor at MIT. When he secretly solves highly difficult graduate-level math problems, his talents are discovered by Professor Gerald Lambeau, who decides to help the misguided youth reach his potential. When Will is arrested for attacking a police officer, Professor Lambeau makes a deal to get leniency for him if he gets court-ordered therapy. Eventually, therapist Dr. Sean Maguire helps Will confront the demons that are holding him back.