Dutch and his group of commandos are hired by the CIA to rescue downed airmen from guerillas in a Central American jungle. The mission goes well but as they return they find that something is hunting them. Nearly invisible, it blends in with the forest, taking trophies from the bodies of its victims as it goes along. Occasionally seeing through its eyes, the audience sees it is an intelligent alien hunter, hunting them for sport, killing them off one at a time.
A city in Washington state awakens to the surreal sight of foreign paratroopers dropping from the sky—shockingly, the U.S. has been invaded and their hometown is the initial target. Quickly and without warning, the citizens find themselves prisoners and their town under enemy occupation. Determined to fight back, a group of young patriots seek refuge in the surrounding woods, training and reorganizing themselves into a guerrilla group of fighters.