Hiccup Horrendous Haddock III, the quiet and thoughtful son of the Chief of the Hairy Hooligans, tries to pass the important initiation test of his Viking clan by catching and training a dragon. Can Hiccup do it without being torn limb from limb?
When Hiccup finds a coffin at sea, he opens it to discover a riddle that will lead to the treasure of Grimbeard the Ghastly, the world's greatest pirate and Hiccup's ancestor. So Hiccup and his friends set out on a treasure hunt, determined to master the art of swordfighting. How else will they escape an island of murderous dragons, defeat a boatload of Viking pirates, and survive all the twist…