One day, while Solange is studying sheep-shaped dust formations in her apartment, the doorbell rings. A deliveryman claims to have a package for her. Solange is formal in her response: That's impossible. The deliveryman insists, and miss understanding ensues. Solange collapses. After asking questions about her social and personal life, a doctor suggests that someone watch over Solange at night. her landlord, who drove her to see the doctor devotes himself to the task. Later, remembering his other obligations, he must recruit a new watchman...A veritable human chain is put into place to prevent Solange from being left alone. This relational therapy seems beneficial.

California, Mojave Desert, 1998. A strange glow appears in the sky. Sam, a forty-something door-to-door salesman, travels through the few inhabited zones of the Californian desert in search of clients, yet everything seems deserted. What's more, his wife won't answer his calls. It's as if everyone were avoiding him. When his car breaks down, Sam becomes a prisoner of the empty, hostile environment. Alone and without human contact for days on end, he listens continuously to a talk-show on the only local radio station. The host, a man named Eddy, takes calls from listeners who share their thoughts on a child killer at large in the area. At the same time, Sam starts getting psychologically harassed by strange threats he receives on his pager. Gradually, people begin to reappear and attempt to kill him. Sam has become a target and he must now defend himself. Little by little he loses it, caught up in a paranoid identity crisis. Is he truly the killer they're after, or is he being driven to become so?