This spectacular natural history special tells the story of the incredible struggle for survival of the dragons of the Galapagos archipelago. The lives of these giant lizards, called land iguanas, are intimately linked with the archipelago’s most active volcano. On the island of Fernandina, filmmakers David and Liz Parer will follow the annual migration of the land iguanas up the steep slopes of the volcano and into the steaming caldera where they lay their eggs. Off the coast, we will follow the world’s only sea going iguana as it makes its way into the most exciting marine environment on earth- a world of sperm whales and sharks, huge balls of baitfish and masses of seals, dolphins and penguins... an epic story on the scale of Arctic Kingdom.