In 2035, Earth was struck by an unprecedented "Age of Extreme Cold." Global temperatures plunged within three months, dropping to minus twenty degrees in equatorial regions and heading toward minus seventy or eighty degrees in higher latitudes. Blizzards raged without end, civilization collapsed completely, and survivors were forced to struggle for life across wastelands and ice fields.
This apocalypse is not "straightforward." With the arrival of extreme cold, an unknown energy field enveloped the Earth. Some people awakened a "Survival System," while plants and animals underwent bizarre mutations. The cold is not the only enemy. Deeper secrets lie beneath the ice.