On the remote island of Berk, Vikings live under constant threat from dragons that raid their livestock and destroy their homes. Hiccup Horrendous Haddock III-an inventive but awkward teen and the son of Chief Stoick the Vast-struggles to fit into a culture that values brute strength. During a dragon attack, he secretly injures a rare Night Fury but, instead of killing it, forms a bond with the creature he names Toothless. Their friendship reveals that dragons are not the monsters the Vikings believe them to be.