Three years after “The Day”—the cataclysmic event that devastated the surface world—you have lived in Eden, a vast high-tech underground bunker city carved beneath the Colorado mountains. Designed to shelter 25,000 handpicked survivors, Eden offers artificial skies, lush vertical farms, comfortable housing, schools, markets, and a carefully managed society. But beneath the polished facade, tensions simmer: resources dwindle in the lower levels, power flickers unpredictably, and the ruling Council enforces strict order with an iron grip.