Fears of aliens are renewed by bizarre skeletal remains, a child's anxieties and the discovery of a strangely wounded airman, found in the wake of a devastating hurricane that struck the Everglades.

A deadly virus surfaces that may be tied to runaway baboons, hunted by Russell and Underlay in the Everglades. Still, an alien presence is palpable and manifests itself in mysterious ways, including another appearance by that ominous orange glow.