John McTiernan directs this sci-fi action feature starring Arnold Schwarzenegger. Major Alan 'Dutch' Schaefer (Schwarzenegger) and a band of mercenaries head into the Central American Val Verde jungle to rescue some American hostages from a band of guerrilla fighters. However, they soon discover there is also an extraterrestrial evil force at work in the jungle. The mercenaries are picked off one by one and soon Schaefer is forced to face the alien predator alone.