Days 1 to 4

When a sudden power outage plunges the world into silence, two disparate families face escalating nightmares in America. In Manhattan, siblings Elizabeth and Henry are left alone in their parents’ apartment, witnessing horror unfold outside as they grapple with the possibility of danger lurking within. Meanwhile, on a secluded farm in Oklahoma, Thomas and his family sense a disturbing change, which escalates following a chilling encounter on a deserted road. As a mysterious infection spreads, both families confront the terrifying realities of their new existence.