Robinson and Harding travel to the Rocky Mountains in Montana, USA, for this special programme on dinosaurs and the professional and private 'dinosaur hunters' who seek and recover fossil remains. Accompanying several digs, they soon learn that the methods used by the dinosaur hunters turn out to be similar to those employed by archaeologists. After joining a museum dig to excavate the bones of various tyrannosauroids, they discover the profitable tourist industry that dinosaur hunting has spawned in the US. Their journey culminates in a trip to the Badlands, where they help dinosaur hunter Jack Horner dig up the remains of a tyrannosaurus.