Bart is skateboarding home and has the uneasy feeling that he's being watched. He rushes to his room. Later that night, his family finds him in his bedroom wrapping himself in tin foil, they think he's crazy but he explains that there's somebody spying on him. They take him to a doctor but they can't help him, so the paranoia continues. Cut to the Flanders' house, we see Ned locking himself up in a safe room, there we see he's monitoring everyone. Then we see him spying on Bart in the changing room.