Four friends. Two couples. One final road trip before adulthood begins.
Fresh from college graduation and eager to start the lives they've worked so hard to build, they leave campus behind and head home across the lonely highways of New Mexico. Seeking one last adventure, they spend the night in a remote corner of White Sands National Park near the ruins of an abandoned military installation.
As the sun sinks below the dunes, the desert becomes unnaturally silent.
Then they realize they are not alone.
Something is stalking them across the endless white sands. Something that leaves no tracks and cannot be seen. Something that strikes from the darkness and disappears before they can fight back. With every passing hour, terror grows as the friends discover that the desert hides secrets far more terifying than any military experiment.