Steve and his Deadly crew embark on a river expedition deep into the unexplored jungles of Guyana. Venturing out at night, Steve joins a team of scientists to catch the largest predator in these rivers, the formidable black caiman. Next, Steve goes fishing for a monster with a face full of teeth to rival a piranha's. Fearsome by nature and name, it's the wicked-looking wolf fish. Finally, Steve swims in a deadly rainforest river to find an animal so lethal that just touching it could stop his heart in an instant. It's the supercharged shocker, the electric eel.