They ban the letter "S" from the alphabet, causing communication to break down.
In the Dragons: Race to the Edge episode "Reign of Fireworms" (Season 3, Episode 7), the Dragon Riders face a dual threat: a natural disaster in the form of a massive dragon migration and a sudden political upheaval within their own ranks. Plot Overview [S3E7] Reign Of Fireworms
The episode's climax occurs when the full Fireworm swarm arrives, threatening to burn the island while most of the Riders are still imprisoned. Realizing they cannot handle the crisis alone, the twins are forced to "rescind" their claim of the island to get Hiccup and the others to help. They ban the letter "S" from the alphabet,
The episode begins with Fishlegs conducting a dragon census on Dragon's Edge, only to discover scouting Fireworms landing on the island. These small, heat-emitting dragons are the precursors to a full migration that could incinerate the Riders' base within a week. While Hiccup attempts to organize a defense, the Thorston twins, Ruffnut and Tuffnut, discover a "claim stone" belonging to their ancestor, Magmar Thorston. This stone purportedly grants them legal ownership of the entire island. The Thorston Tyranny Realizing they cannot handle the crisis alone, the
As the other Riders—Astrid, Fishlegs, and Snotlout—rebel against or fail to entertain the twins, they are thrown into a makeshift dungeon. Resolution and Themes