: To counter the Shellfire, Hiccup forms an uneasy alliance with Viggo Grimborn , who has been betrayed by his brother Ryker. This partnership forces Hiccup to balance his morality against the desperate need to save his home.
: The primary antagonist force is the Shellfire , a colossal, deep-sea dragon under the control of the hunters. Ryker uses it as a living battleship to bombard the Edge from the ocean. Dragons: Race to the Edge - Season 4Eps26
The episode centers on a massive assault by the Dragon Hunters, led by , against the riders' base at Dragon’s Edge . : To counter the Shellfire, Hiccup forms an