A herpetologist investigating a series of fatal rattlesnake attacks discovers that the creatures have been infected by a mysterious nerve gas disposed of in the desert by the military.

A large number of chemically altered rattlesnakes become fearsome killers in this TV chiller. The tale is set in the Mojave Desert and centers upon Sam Parkinson, a noted herpetologist, who has come to investigate a series of strange deaths that began with two dead children found near their parents' campsites.—Ørnås