In a near-future New York, American society is ruled by a totalitarian government. In order to control a blood borne pathogen, the positive citizens are tattooed with a P on the chest and sent to quarantine. When teenager Blue accompanies her best friend Laurie to a government clinic for examination, they are advised on the street by Willie to not go to the place. In the waiting room, Blue and Laurie witness the staff mistreating an old lady, and they decide to leave the clinic. Security guards chase them, but Willie takes them to his brother Torch, who hides and protects them. Blue learns that Torch is the leader of an underground movement of resistance, the government quarantine is a sham, and the patients are left to die in starvation. Blue falls in love with Torch and joins the movement. When Torch is arrested by the police, he is tested and finds that he is positive. He is sent to quarantine and Blue tries to find a way to meet him.