The story begins when Hiccup, his friend Fishlegs, and his cranky dragon Toothless get separated from their class during Boarding-an-Enemy-Ship practice. They accidentally board a prowling Roman galley intent on provoking war. When they rescue a tiny nanodragon, they uncover a plot to steal every dragon on the Isle of Berk!

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 twists and turns their journey will bring?

In Hiccup the Viking's misadventures, the stakes have never been higher, and it's friend versus foe to decide the fate of the world. In this, the penultimate title in the amazing story arc that began with How to Train Your Dragon, Hiccup is faced with a personal dilemma against the backdrop of an impending battle and the possible destruction of everything he knows.

"The Doomsday of Yule has arrived, and the future of dragonkind lies in the hands of one boy with nothing to show, but everything to fight for. Hiccup's quest is clear ... But can he end the rebellion? Can he prove himself to be king? Can he save the dragons? The stakes have never been higher, as the very fate of the Viking world hangs in the balance!"--

The Dragon Rebellion has begun, bringing the Vikings' darkest hour upon them. Hiccup has become an outcast, but that won't stop him from going on the most harrowing and important quest of his life. He must find the Dragon's Jewel in order to save his people ... but where should he begin?

Now chief and ruler of Berk alongside Astrid, Hiccup has created a gloriously chaotic dragon utopia. When the sudden appearance of female Light Fury coincides with the darkest threat their village has ever faced, Hiccup and Toothless must leave the only home they've known, and journey to a hidden world thought only to exist in myth. As their true destines are revealed, dragon and rider will fight together-to the very ends of the Earth-to protect everything...

Unlike his large and brave fellow Vikings, Hiccup is small and afraid of everything until he helps steer his ship to safety during a storm.

Stranded on the exceptionally dangerous, and possibly haunted, Beach of the Broken Heart, Hiccup must face UG the Uglithug and complete the impossible task -- or die trying. Along the way, he'll have to battle Berserks, dodge Scarers, and save Fishlegs from being fed to the Beast, all while being hunted down by an old enemy with a dark secret about the mysterious Lost Throne. With Toothless by his side, and time to stage his rescue running out, what's...

While Astrid, Snotlout and the rest of the gang are challenging each other to dragon races, Hiccup and Toothless journey through the skies, charting unmapped territories and exploring new worlds. When one of their adventures leads to the discovery of a secret ice cave that is home to hundreds of new wild dragons and the mysterious Dragon Rider, the two friends find themselves at the center of a battle to protect the peace.