In the basement of a normal Maryland house one man keeps 50 of the world's most deadly venomous snakes, putting himself in mortal danger on a daily basis. In Mexico another man injects himself with deadly venom to keep himself alive.

In an 8th floor apartment in Miami Beach one man raises a spotted hyena, putting himself in mortal danger. In Africa, a schoolteacher wakes to the sound of her own bones crunching as she is dragged away in the vice-like grip of a hyena's jaws.

Sam Mazzola kept bears on his farm in Iowa. He charged people to wrestle them and enjoyed the attention and financial rewards. When a young employee is killed while tending to a savage bear, the dark truth about Sam's destructive lifestyle is revealed.