During an Arctic research expedition, glaciologists Evren Locke and Scarlett Voss uncover a body preserved almost perfectly beneath decades of ice. What first looks like a routine scientific find quickly turns into a chilling mystery when clues hidden in the equipment and objects near the body suggest the death was no accident. As the two researchers dig deeper — through both ice and old records — buried military secrets, scientific rivalries, and a forgotten conspiracy begin to surface along with the melting glacier, putting their lives at risk in one of the most isolated places on Earth.