The penultimate two-parter. Viggo reveals his true plan: the Silent Forge isn't a source of power—it's a lock . The Eruptodon’s tears, when combined with the Dragon Eye’s final lens (the Lens of Solitude ), will unlock the , a supervolcano that, if detonated, will create a tidal wave of molten rock that will wipe out every dragon nest in the archipelago.
In a shocking twist, Viggo saves Hiccup from a falling rock, shoving him aside. “A Grimborn always pays his debts,” he says, then smirks. “Besides… this ending is far more interesting.” He falls into the lava, not screaming, but laughing. Ryker, witnessing this from his ship, finally breaks—not in grief, but in terror. He orders a full retreat. Dragons Race To The Edge - Season 3
The Riders split up. Hiccup, Toothless, and Astrid chase Viggo into the caldera. Snotlout, the Twins, and Fishlegs stay behind to hold off Ryker’s fleet. The penultimate two-parter
A new tribe enters the fray: the , led by the proud and secretive Mala . They ride Razorwhips—beautiful, razor-winged dragons that can turn invisible. Mala blames Hiccup for “inviting” the Dragon Hunters into their sacred archipelago. A tense standoff occurs. In a shocking twist, Viggo saves Hiccup from
Toothless, understanding the Eruptodon’s psychic cry of pain, fires a plasma blast not at Viggo, but at the keystone geode holding the harness together. The explosion triggers a chain reaction. As the caldera begins to collapse, Viggo has a choice: escape or ensure his plan succeeds.
Episode 1: The Silent Forge
Viggo doesn't want to kill dragons. He wants to erase their homes, forcing them to flee to the human lands, where he can capture them en masse. It's genocide by geography.