Radio astronomer Zane Zaminsky believes he's picked up a cosmic noise that is signaling extraterrestrial intelligence. But after turning over the tape to his boss Phil Gordian, Zane's fired, his girlfriend get transferred and his partner is found dead from an apparent suicide. Zane's desperate search for answers leads him to Mexico and a mysterious power plant this is generating more than electricity and is run by people who are not what they appear to be. A scientist investigating an impending ecological disaster is murdered and Zane is arrested for the crime. Zane escapes custody carrying proof of an alien invasion.