Zemljina orbita, prije nekoliko tisuća godina. Svemirski brod obrušava se iznad Južnog pola... Antarktika, zima 1982. Norveški helikopter progoni psa iz baze pokušavajući ga eliminirati prije nego dotrči do članova američke znanstvene ekspedicije. Pritom jedan Norvežanin pogine, a drugog ubije Amerikanac Garry nakon što izbezumljeni čovjek počne pucati snajperom po američkoj bazi. Stoga pilot R. J. MacReady i liječnik dr. Cooper odlete na mjesto događaja i otkriju da je tim doživio pravi pokolj ostavivši iza sebe neobičnu gromadu leda. Istodobno, pas kojeg su Amerikanci prihvatili nakon tragične potjere pretvori se u stravično stvorenje čije je podrijetlo sve samo ne zemaljsko.
When some very creepy things start happening around school, the kids at Herrington High make the chilling discovery that confirms their worst suspicions: their teachers really are from another planet!
A parasitic alien soul is injected into the body of Melanie Stryder. Instead of carrying out her race's mission of taking over the Earth, "Wanda" (as she comes to be called) forms a bond with her host and sets out to aid other free humans.
Na Dan zahvalnosti, grupa nezadovoljnih zaposlenika trgovine igračkama nevoljko dolazi na posao kako bi otvorili trgovinu u ponoć za najprometniji dan u godini za kupnju. U međuvremenu, vanzemaljski parazit pada na Zemlju u meteoru. Ova skupina neprilagođenih predvođena upraviteljem trgovine Jonathanom i dugogodišnjim zaposlenikom Kenom ubrzo se zatekne u borbi protiv horda blagdanskih kupaca koji su pretvoreni u monstruozna ubilačka stvorenja.
The Lunar Base Ark explores ore and unexpectedly is hit by a meteor shower and has severe damages. Colonel Gerard Brauchman sends the crewwoman Ava Cameron to repair a wing that is full of CO2. Dr. Lance Krauss warns that the gas may cause paranoia and hallucinations. Ava brings a sample of the meteor for analysis and Dr. Krauss finds that there are spores attached to the meteor. Ava accidentally cuts her finger in a sample but she hides the cut from the doctor. Soon Ava gets pregnant and delivers an alien offspring. However, neither Col. Brauchman nor Dr. Kraus believes in her words and they believe that Ava is delusional. He offspring bites the crewman Bruce Johns and the crew discovers that Bruce has been cloned by the alien. Soon they find how dangerous the clone is.
When a meteorite touches down in the New Jersey woods carrying a monstrous alien slug, it’s up to four teens to stop it before it’s terrifying brood consumes all life on Earth!