In the ashes of a nuclear winter, the shattered remains of civilization lie buried beneath endless ice and irradiated storms. As Commander Eliza Voss—a former naval officer and one of humanity's last hopes—you command the advanced nuclear submarine Ardent, scouring the frozen ocean depths and desolate, radioactive cities for scarce resources and lost technologies. Every journey demands hard choices: risk venturing into ruined metropolises for supplies, or conserve dwindling energy to keep your crew alive and critical systems operational. The world above is silent and deadly, forcing you to adapt, upgrade your vessel, and contest with the unknown threats lurking beneath the ice. Survival hinges not only on cunning and resourcefulness, but on your resolve to outlast the unrelenting cold and the haunting legacy of a world destroyed.