What Waits Below

Overview

A US military team tests a unique radio transmitter intended for submarine communication in the depths of Central America's caves. When a signal vanishes, Major Elbert Stevens leads a group of soldiers alongside cave expert Rupert 'Wolf' Wolfsen and scientist Leslie Peterson to investigate. As they delve deeper into the darkness, they encounter a tribe of albino cave-dwellers, cut off from civilization for millennia. These inhabitants, sensitive to radio frequencies and capable of seeing in infrared, begin tracking the explorers by their body heat, setting the stage for a tense confrontation.