Davion Trogdor the Dragon Knight gets teleported into the world of HTTYD. Lost and alone, he sets out on a quest to return home while meeting Fetch the Deadly Nadder and the great Dragon trainer himself, Hiccup. But while on his quest, he soon realizes the Ancients of his world The Dire and The Radiant arrived and has begun to take over everything, and now He, Hiccup and His allies must work together to save the world of HTTYD.