Part 4/7:

When night falls, a noise from a nearby warehouse pulls Reese out of bed. Armed with a lantern, she discovers a book detailing electromagnetic pulses (EMPs), hinting at a catastrophic event underway. As she scrambles to piece together a dismantled radio station left by her grandfather Frank, she learns about the gravity of the situation: a significant EMP attack has plunged the Western United States into darkness. After establishing contact with Frank, he urges Reese to bring her father to the mountains for safety, revealing he has supplies stocked in preparation for such emergencies.