When the Director of the CIA is handed a report from a Brazilian morgue documenting the confirmed death of Agent Clark, who disappeared four years before on an expedition into the Amazon jungle, it doesn't take long for him to realize why he has been notified. In one hand, he holds a pre-expedition photo of Agent Clark, waving with the one arm he has left after a sniper's bullet cost him the other; in his other hand, the director holds a photo from the morgue - both arms resting by Clark's sides. What happened out there? A specially selected scientific and military team is sent in to find out...