Disaster is rumbling on Lava-Lout Island—the volcano is on the brink of erupting! Hiccup must embark on a dangerous quest to stop it, joined by his loyal friend Fishlegs and the boastful ex-Hero, Humungously Hotshot. But the island is crawling with deadly Exterminator Dragons… and hiding in the shadows is Hiccup’s arch enemy, ready for revenge. Can Hiccup save the island—and survive the battle that’s about to erupt? (Book 5)
