You will Watch Dragons: Race to the Edge Season 3 Episode 3 online for free episodes with HQ / high quality. Stream cartoons Dragons: Race to the Edge S03E03 Imperfect Harmony. The riders start to explore the maps they have seen on the ‘Dragon Eye’ and go far from Berk, to the point that they decide that they need an island base just for themselves. They come across an island that they think is perfect only to wake in the morning to find that their dragons have been trapped by a hardening-mucus spitting dragon they call the Death Song. In an attempt to free their dragons all of the group apart from Hiccup get trapped by the dragon eater. Hiccup uses Monstrous Nightmare mucus that Snotlout brought with him to warm the hardened mucus and freeing the group.