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.

Recounts the further escapades of Hiccup Horrendous Haddock the Third as he continues his Viking training during which he escapes from a boatload of Roman soldiers and searches for his kidnapped dragon.

Someone has stolen the fire stone, so eggs of exterminator dragons are hatching. Hiccup must find and return the fire stone to the volcano to save the Tribes from being wiped out.

Hiccup Horrendous Haddock III, the reluctant Viking hero, tries to make the most of his somewhat limited time to discover America, return to Berk, save his father, fight Polarserpents, and win a swimming race.

A dragon rebellion is coming-filled with the meanest, nastiest dragons in the Archipelago. Razor-wings, Tonguetwisters, and Vampire Ghouldeaths are attaching Vikings and seem to be seeking one soul in particular: Hiccup Horrendous Haddock the Third! Only a King can save them...and only a champion with all of the King's Lost Things can be King. In his adventures, Hiccup has collected quite a few "things" himself. But can a scrawny Viking save the entire...

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.