From the introduction: "Ten days ago, the world went utterly dark. The sun was engulfed by a shadow spreading across the world, extinguish light wherever it existed. Within a week, all light, save for the odd battery-driven light, was gone. Even then, those lights seem to only last for moments in the oppressive darkness." "Chaos and panic gripped the world. Science could not explain it. Riots, hoarding and violence consumed the Earth. Then They came." "Five days after the darkness consumed the light, They, shades of horror, lurking in the darkness, appeared. Consuming, killing, destroying. Harbingers of the darkness, they kill anyone who is left in the dark." "The few survivors of the world huddle around the last vestiges of light available. Candles, torches, fires, flashlights. Whatever they can find."