How to Betray a Dragon's Hero

How to Betray a Dragon's Hero is the eleventh book in the How To Train Your Dragon book series. It will be released on the 5th of november 2013.

Plot
Since the book is not released yet, there is nothing known about the plot.

Here is the product description from amazon: ''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.''