Dominic is in Zambia on a mission to find one of the most feared snakes on the planet, the enormous and deadly gaboon viper. Armed with an incredibly fast strike, the gaboon viper wields the longest fangs of any poisonous snake – two-inch long swiveling switchblades that deliver more venom in one bite than any other snake on Earth. He and local snake expert Morgan, travel by boat up the mighty Zambezi River, navigating his way through dangerous pods of hippos and Nile crocodiles, and through the Zambian forest – home to a group of very rare white rhinos and villagers who make their homes along the remote edges of the Zambian forest. While there, Dominic learns about the ancient relationship between the people and the termites that build spectacular 20-foot mounds nearby.