Utah, 130 million years ago. A band of armoured dinosaurs battle to reach adulthood, pursued by some of the most formidable predators that have ever lived: utahraptors. It's a deadly game of cat and mouse that pits heavy armour against vicious claws and lethal cunning; a life-and-death struggle that builds to a final showdown amongst the flames of a burning forest.

Based on an unprecedented discovery in Alberta, Canada, this episode tells the epic tale of a Pachyrhinosaurus herd, one of the largest dinosaur groups that ever lived, through the eyes of its young member Albie.