Hiccup and Toothless are dead...or that's at least what Berk thinks. In a battle with Dagur they were shot down and not seen again. When they wake up from being knocked out Hiccup has a choice between going back or exploring the in and outs of the archipelago. He decides to explore the world with toothless. They discover things they would never have known of at Berk. It was amazing until, years later when Berks enemies arise and so do Hiccup and Toothless's and they happen to cross paths