The film is a dystopian science fiction thriller (genre) set in the near future in a more authoritarianism United States. It deals with the social persecution and criminalisation of people who are infected with a sexually transmitted infection similar to HIV. Those who test positive for the disease are forcibly placed into quarantine camps. In the quarantine camps they are tattooed with a ''P'' by the authorities to indicate their positive status and shot if they try to escape. The quarantine camps are dilapidated places where patients are left to die without care or contact with the outside world.