Though its red hue was unusual, there was no sign of apocalyptic doom with the appearance of the Krenton-Benton comet. In its wake the comet left a vast cosmic dust cloud sweeping toward Earth. Scientist detect a significant rise in global pollen count as the Earth passes through the cloud. Unaware, that this is only the beginning of their problems. Deep in the Amazon jungle something has taken root, and soon make itself relentlessly known. As one small shoot breaks the surface of the jungle floor, horror begins to bloom.