A behind-the-scenes look at the science and technology behind the series

Zoologist and adventurer Nigel Marven travels back in time on a prehistoric safari to find some of the most spectacular animals ever to live. This time Nigel has traveled back 100 million years to Cretaceous South America, during the true time of the titans. Nigel is on the trail of the largest land animal ever to exist and manages to run into the biggest predator to ever stomp the land

Nigel searches the early Mongolia deserts and forests for Therizinosaurus, who has massive and very long claws. On his journey, Nigel dashes across a nesting ground of Protoceratops into a forest ruled by Velociraptor and then into the path of a Tarbosaurus. He also finds a Mononykus and discovers they have feathers