In Book #5, someone has stolen the Fire-Stone. Now the volcano on Volcano Island has become active and the tremors are hatching the eggs of the Exterminator dragons! Can Hiccup return the Fire-Stone to the Volcano, stop the Volcano from erupting, and save the Tribes from being wiped out by the terrible sword-claws of the Exterminators?
Cressida Cowell grew up in London and on a small, uninhabited island off the west coast of Scotland, where she spent her time writing stories, fishing for things to eat, and exploring the island looking for dragons. She was convinced that there were dragons living on the island and has been fascinated by them ever since.