Hiccup is faced with the moral dilemma of having to kill a dragon as part of his final test. He chooses to leave Berk with his dragon, Toothless, instead. On his own Hiccup grows into a formidably strong and dangerous warrior, his bond with Toothless also slowly grants him unknown powers. He's unsure if he's willing to come back and risk his life to save Berk from the queen dragon.