Upon his release from a mental hospital following a nervous breakdown, the directionless Anthony joins his friend Dignan, who seems far less sane than the former. Dignan has hatched a harebrained scheme for an as-yet-unspecified crime spree that somehow involves his former boss, the (supposedly) legendary Mr. Henry.
A group of troopers take refuge in an abandoned outpost after fighting alien bugs, failing to realize that more danger lays in wait.
After she delivers her child in an ambulance, alien Eve is killed by a half-breed. Fortunately, Dr. Abbot scoops up the baby alien and escapes. In time, the baby grows into a gorgeous blonde named Sara and begins her quest to find a worthy mate. But Sara is also savage and leaves a trail of deaths in her wake. This carnage makes chemistry student Dean question whether to help her race or not.
