The Viking village of Berk, located on an island, is attacked by dragons, which take livestock and damage the property. Hiccup, the 15-year-old son of the village chief, is too thin and weak to fight the dragons, so he creates mechanical devices and once he uses a bolas lance to bring down a Nocturnal Fury, a dangerous and rare dragon. Find the dragon in the forest, tangled up and frees him by becoming his best friend...