Hiccup and his friend Fishlegs are kidnapped as part of a vicious plot to steal every dragon on the Isle of Berk! Hiccup must rely on a new nanodragon friend, and his ability to speak Dragonese, to get them out of this pickle.

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...

When his best friend Fishlegs is stricken with Vorpentitis, Hiccup Horrendous Haddock III must outwit Sharkworms, Doomfangs, and Hooligans to find a potato--the rare cure for this deadly disease.

The How to Train Your Dragon series chronicles the adventures and misadventures of Viking underdog Hiccup Horrendous Haddock III and his dragon, Toothless. In Book 9, a dragon rebellion is coming—filled with the meanest, nastiest dragons in the Archipelago. Razor-wings, Tonguetwisters, and Vampire Ghouldeaths are attacking Vikings and seem to be seeking one soul in particular: Hiccup Horrendous Haddock the Third! Only a King can save them...and...

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.

Someone has stolen the Fire Egg. Now the volcano on Volcano Island is active and the tremors are hatching the eggs of the exterminator dragons! Can Hiccup return the Fire Egg to the volcano, stop the volcano from erupting, and save the Tribes from being wiped out by the terrible sword-claws of the Exterminators.

Chronicles the adventures and misadventures of Hiccup Horrendous Haddock the Third as he tries to pass the important initiation test of his Viking clan, the Tribe of the Hairy Hooligans, by catching and training a dragon.

Hiccup, Toothless and their courageous friends soar beyond the borders of Berk to discover the mysterious Dragon Eye artifact, leading them to new dragons and fearsome villains.

Can Hiccup complete the Impossible Task, battle Berserks, save Fishlegs from being fed to the Beast AND discover the secret of the Lost Throne? What's a hero to do?

When Hookfang the dragon's shedding causes fires, he becomes upset and runs away, leaving it up to the Riders of Berk to find him before Alvin the Treacherous does.