In a world where rising sea levels and catastrophic earthquakes have swallowed entire continents, humanity has been wiped out—except for four soldiers who find themselves stranded on the last remaining patch of land: a crumbling military outpost atop a mountain-turned-island in the middle of an endless ocean.
For two years, they battle starvation, isolation, and the psychological toll of being the last remnants of civilization. Their food supplies dwindle, and their communication devices pick up nothing but static. As desperation sets in, they attempt to build a raft, hoping to find other survivors—until they make a chilling discovery: something else has survived beneath the waves.
A shadow moves beneath the water, massive and intelligent. Their isolation was never complete. They are not alone. And now, the real fight for survival begins.