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

This is just the start to an epic adventure that will have kids laughing from start to finish. As with the other books in the series, imaginative black-and-white illustrations enhance this exciting tale.