Jimmy has never left his house in his entire life. His dad Adam says it is because there's an apocalypse outside that took Jimmy's brother Ethan years ago. Jimmy has no problem believing this, until he begins to get a regular visitor, a papergirl named Lisa. Lisa claims everything's just fine outside while his father claims there are nothing but brain dead people infected by the toxic air outside. Jimmy is now at odds with himself and must decide what he believes is true.