In the distant future, when the ocean has risen up to consume nearly all of humanity, a surviving woman watches her descendants grow less and less human and morph into alien-like creatures. She recounts her memories of the flood as she ascends a mountain to see her children, who have been left there to adapt into their new bodies.

Two rich, arrogant men working in tech find themselves climbing Mount Everest. But as the dangers of the mountain, both natural and supernatural, encroach they must fight to survive.