How to train your dragon : dragonvine / script by Dean Deblois & Richard Hamilton ; art, pages 7-16 by Doug Wheatley, art pages 17-86 by Francisco de la Fuente ; coloring by Wes Dzioba ; lettering by Nate Piekos of Blambot and Michael Heisler.
Hiccup, Toothless, and the rest of the dragon riders encounter two mysteriously linked threats to Berk: an island consumed by deadly Dragonvine, and a new terrifying dragon species called Silkspanners.