Unlock the secrets of the Dragon Eye and come face to face with more dragons than anyone has ever imagined as Hiccup, Toothless and the Dragon Riders soar to the edge of adventure.
Genre: Animation, Action, Adventure
Cast:Jay Baruchel , America Ferrera , Zack Pearlman , Christopher Mintz-Plasse , T.J. Miller , Andree Vermeulen , Mae Whitman , Steve Alterman , Mitch Carter , David Faustino , Nolan North , JB Blanc , Chris Edgerly , Alfred Molina , Michael Goldstrom , Hakeem Kae-Kazim , James Arnold Taylor , Paula J. Newman
While trying to stabilize the volcano that threatens to destroy Dragon's Edge, the Riders discover troubling evidence of new Hunter activity.
When Hiccup is summoned to the Northern Markets to look into a curse that causes people to disappear, he is sucked down into a cavern of the fearsome Sandbuster.
Hiccup and the gang are invited to Berserker island by Daggur, only to find their dragons acting strange on the island. So when they are attacked by dragon hunters, the gang has to take them on alone, without their dragons.
When Snoutlout crashes on a mysterious island he comes face-to-face with the Wing Maidens and must rely on Astrid, Heather, and Ruffnut to rescue him.
The Riders follow the aging Eruptodon to the sacred Dragon Graveyard, but soon find themselves trapped by the fearsome Sentinel dragons who guard the graveyard.
The Outcast leader, Alvin, is kidnapped and held for ransom by bandits. They call on the Dragon Riders to request the assistance of Thor Bonecrusher.
After Astrid and Hiccup go off to an island together to retrieve a special oil, Snotlout and the rest of the riders are left to defend the edge against Krogan and the hunters.
Hiccup and the riders are on the run from the Flyers, but when they return to Berk, where Stoick is preparing for war, Hiccup is torn between his desire to get the Edge back and his unwillingness to fire on dragons.
When Stoick decides to take the battle on the Dragon Flyers to the Edge, the Riders must figure out how to trap the Flyers and take back the Edge.
After being ambushed by aggressive Slitherwing dragons on a new island, the Riders think Stormfly has been poisoned and race to get an antidote.
Tuff fakes his own death to make room for Throk, but when Ruff tries to train the Changewing that she thinks ate Tuff, a flock of angry Changewings come for the dragon.
On a search for Dagur's dad, Hiccup and Dagur encounter vicious Grim Gnashers, and Tuff's search for a missing Chicken leads him to discover she has a second family.
Trader Johann tells Heather her father may still be alive, she goes looking for him. In the end, We find out more secrets of Trader Johann and who he really is.