In this jungle adventure, two explorers travel deep within the mysterious, dangerous Amazon in search of medicinal herbs, used for head-shrinking by the natives, that could used in the treatment of cancer patients. During their arduous trek, the two slowly fall in love. Meanwhile a plantation owner tries to figure out why his workers are leaving in droves and going back to the jungles. He learns that they are being terrorized by a gigantic, hungry bird. Fortunately, things are not as they seem as the explorers soon find out.