During a top secret dig in Antarctica, the United States government discovers a stunning and ancient secret: the legendary lost city of Atlantis. Dr. Conrad Yeats, the foremost authority on megalithic architecture, is brought in along with his estranged father, General Griffin Yeats, and his former lover, the linguist Serena Serghetti, to explore this astonishing civilization hidden beneath the ice. But their investigation uncovers something shocking that threatens the very existence of humanity and together, they are thrust into a deadly race against the apocalypse.