It is the year 2048. Highly social people rule the world. Those that are anti-social are killed off as soon as they are identified. It is considered a disease and if they aren't killed, they are locked up and excessively drugged.
Paul is antisocial guy who is being oppressed by the government because of his submissive nature. He finds that because society continues to push him away from his natural tendencies, he is becoming even more antisocial and is in more danger from the government.
I must be alone...I cant hurt any more people.
Paul was given a chance to be let out of his cell for being temporarily social but he wants to continue being antisocial and nearly escapes the compound. He finally sees his chance to forever be alone in the world, away from the prying eyes of society. On his way out, he sympathizes with his fellow prisoners as he sees them being tortured. He returns to save them.
Paul returns to try and help his fellow antisocial comrades but in the process, he ends up getting dozens of people killed.
He sees the error of his ways and that being social causes more problems than not. He does receive the chance to escape again and lives in solitude for the rest of his life.
Even though the rest of the world is still subjected to being social, Paul can live out the rest of the days alone in his refuge.