Set 5 years after the events of the first movie, as the hero, Hiccup, has aged so has the target audience of the film. After uniting the people of Berk with the dragons, Hiccup and his dragon, Toothless, spend their time exploring and finding new worlds whilst his friends partake in the dragon-racing derby; Berk’s new most popular sport. However after Hiccup and Toothless soon discover that the people of Berk are not the only people to ride dragons, and that the evil and power-hungry Drago Bloodvist is assembling his own dragon army.
Unlike the first movie, when the main obstacle was the ignorance and superstition of the Vikings, the introduction of a villain who is the personification of evil and cannot be reasoned with turns this film into a war movie, with a very different tone to its predecessor. The other new major character, however, is the antithesis of Drago Bloodvist. Valka is a vigilante who rescues the dragons that Drago is trying to control, and takes them to a beautiful hidden dragon sanctuary. However she also provides many personal revelations to Hiccup himself.
Throughout the movie Hiccup learns about both his past and his destiny.