The story begins when scientist Dr.Rae Crane is sent to Amazonian jungle by his huge drug firm in order to carry out a research project. Although he finds out a “cure for cancer”, he does not succeed in synthesizing the compound. He rejects the help from his research assistant as she is not forthcoming as he used to think. However, the heavy vehicles get closer to the area where they are working, which asks them have to learn to work together ultimately.