Whereas on a space-walking mission, Spencer Armacost, a NASA astronaut, and fellow astronaut Alex Streck, expertise an explosion from a satellite tv for pc which leads to a communication loss for 2 minutes between the astronauts and Earth.
After returning to their respective spouses, the 2 astronauts by no means discuss their ordeal. Streck grows more and more agitated and bleeds to loss of life throughout a celebration. His dying is dominated as a stroke by NASA. Whereas nonetheless in mourning for her misplaced husband, Streck’s spouse experiences delusions and tells Spencer’s spouse Jillian that her husband had been listening to an unknown entity on the radio who’s now inside her. She then commits suicide by holding a radio whereas sitting in a working bathe.
Spencer retires from NASA and takes an government place in New York Metropolis for a corporation known as McClaren. Jillian questions him about what occurred in the course of the time they misplaced contact. He solutions with a vivid description however shows a suspicious change in persona and turns into very aggressive throughout their subsequent intercourse. Jillian quickly turns into pregnant with twins.
Throughout dinner, Spencer and a co-worker describe a brand new plane their firm is growing that may flip off all different machines, rendering fashionable warfare out of date. A former NASA worker, Sherman Reese, tells Jillian that Spencer’s medical information (together with his signature) has modified for the reason that accident, that Streck’s spouse had been pregnant, and that Spencer is not himself. Jillian doesn’t consider Reese, noting that he had been fired for what gave the impression to be psychotic conduct, however she finds she can’t let go of Reese’s statements.
Jillian calls Reese and learns that Streck’s spouse had additionally been pregnant with twins. Jillian makes preparations to fulfill Reese to study extra, however Spencer runs into him and leads him away. Jillian is unable to get in contact with Reese once more however discovers that he left a word main her to a VHS video tape. The tape exhibits proof of an alien audio sign that, he postulates, was utilized by aliens to beam themselves into the our bodies of the unsuspecting Spencer and Streck, and her twins are seemingly meant to be “Twin-Computer systems” meant to fly McClaren’s new plane.
Jillian desires that Spencer had been possessed by an extraterrestrial and acquires treatment that may trigger her twins to be aborted. The twins, nevertheless, is not going to let her take the capsules and summon Spencer. He assaults her to guard the twins, and causes her to fall down the steps. Jillian awakens within the hospital and is greeted by Spencer, who tells her that nothing goes to occur to the twins.
In a dream, Jillian sees her sister killed by Spencer as a result of she caught Spencer with Reese’s briefcase. Jillian leaves the hospital and fails to evade Spencer since he can talk with the twins. Again at dwelling, Jillian finds her useless sister and floods the ground with water whereas holding a radio as Streck’s spouse had executed. Spencer arrives and admits that “he” (the alien) killed Spencer. Utilizing telekinesis, he strikes Jillian, who’s sitting on a stool, out of the water, however Jillian electrocutes him as she raises her toes out of the water. Spencer’s true alien kind, a tentacled vitality being, leaves Spencer’s physique and transmits itself into Jillian, stopping the electrocution.
Years later, Jillian has remarried and sends her twin sons off on their first day of college. Earlier than they get on the bus, they provide a stern have a look at their mom, whereas she embraces their new stepfather, a “non alien”. They then smile as Jillian assures the brand new stepfather that he’s their father now.