Even though he's secretly terrified of deep water and all the scary things that swim below, Tate wants to shake his boring reputation, so he agrees to travel with his class up the Amazon River to help build a village school. But there are even scarier things than anacondas lurking in the jungles of South America, and Tate soon learns of the legend of El Tunchi, a vengeful spirit that terrorizes those who harm the rainforest...