Defenders of the Wing: Part 2.Mala and her Dragon Worshippers have the riders at sword point, but Hiccup proposes a ceasefire and convinces Mala to trust them as they set out to retrieve the Eruptodon while Heather and the twins help stop the lava flow. The riders learn from Mala, who joins them, that Viggo plans to use the starving Eruptodon to destroy Dragon's Edge by eating at its dormant volcano. Though the Hunters take the island, the riders manage to drive them off with the help of Mala and the Gronkles living on the Edge are recruited to safely return the Eruptodon home. Mala is finally convinced that the riders are allies of the dragons and the two groups align to defeat the hunters for good.