The Dragon Rebellion has begun. Snotlout is the new Chief of the Hooligan Tribe. Stoick has been banished and given the Slavemark. But what can Hiccup do, now all alone and in exile, hunted by both humans and dragons? Can he find the Dragon Jewel, mankind's last and only hope? And if he does, what will he do with it?

Hiccup Horrendous Haddock III was an awesome sword-fighter, a dragon-whisperer and the greatest Viking hero who ever lived - but it wasn't always like that. Hiccup's memoirs look back to when Hiccup was just an ordinary boy, and finding it very hard to be a hero.

The story continues in the ninth volume of Hiccup's 'How to Train Your Dragon' memoirs. Bad times have come to the Archipelago. Ever since the woods of Berserk burned down, it is almost as if the world is cursed. Dragons are starting to revolt against their masters.

Hiccup has three months, five days and six hours to discover America, get back to Berk, save his father, battle Polarserpents, and win the annual Inter-Tribal Friendly Swimming Race. Can he do it?

It is the Doomsday of Yule. At the end of this day, either the humans or the dragons will face extinction. Alvin the Treacherous is about to be crowned the King of the Wilderwest on the island of Tomorrow. His reign of terror will begin with the destruction of dragons everywhere. The fate of the dragon world lies in the hands of one young boy as he stands on the nearby isle of Hero's End with nothing to show, but everything to fight for.