• It will take your breath away
• It's a SCREAM!
• When You Can't Breathe You Can't Scream
• You can't scream if you can't breathe.

A "National Geographic" crew heads down the Amazon in a jungle boat to make a documentary on a long-lost tribe of natives. En route, they rescue a hunter from his sinking boat and take him on board. After the ship's captain is attacked by a poisonous insect and goes comatose, the hunter commandeers the boat, takes the crew hostage, and drags them along on his insane quest to capture a giant anaconda.