After Dagur attacks Berk, Astrid agrees to train a group of back up dragon riders. Little do they know they will soon be pressed into service.

When Stormfly is captured by Dragon Hunters, a new villain emerges, Ryker Grimborn. Hiccup and the riders must find Stormfly and rescue her, before it's too late.

Hiccup and Snotlout race to rescue the other riders from Ryker and the Dragon Hunters. Little do they know that Dagur and Heather are now working with the Hunters.

When a mysterious creature bites Ruffnut, he believes he's turning into the Legendary Likenwing. He locks himself in a cell. Then he waits until a full moon. He goes out to reveal himself, but the team tell him that it was a mysterious _____

When Snotlout and Astrid are given the task of transporting a ceremonial battle-ax to a wedding between their two families, they must put aside their differences when a new type of dragon, the Armorwing, takes the ax.

When Hiccup and Toothless save Barf and Belch from a Snow Avalanche, the Dragon betrays The Twins for Hiccup. They try says to get the Dragon back to the twins but nothing works. When Hiccup gets taken, the Zippleback comes to Hiccups rescue.

Hiccup and the riders must stop Ryker from creating a key to the Dragon Eye, which means a return trip to Glacier Island. Only this time the Riders will be protecting the deadly Snow Wraith.

A distress call comes to Hiccup, Fishlegs, and Snotlout. Astrid, and the Twins stay at the edge to reinforce it. Arguing with the twins, Astrid hurts Ruffnuts feelings and then she is taken by the Hunters. Astrid and Tuff see a battle coming and get ready quickly

Tuff and Astrid continue to defend Dragon's Edge, while Hiccup, Snotlout and Johann discover an island full of wounded dragons that have been hunted and hurt by the Dragon Hunters.

When a new dragon, the Sea Shocker is found at Edge Cove, Fishlegs determines to save it. It's trapped in the cove. He proves his theory to the others and they join in. The Twins who only care about Lokey Day, is it do pranks. The Sea Shocker gets attack med by Scauldrons after the wall is broken

The Skrill returns with a vendetta against Hiccup and Toothless. Hiccup and the Riders must choose a new course of action to stop the vicious dragon.

When Hiccup and Astrid learn that Heather has been taken into the confidence of the mysterious Viggo Grimborn, the Riders now have a real shot of bringing down the Dragon Hunters.

With Heather and the Flightmare captured by Viggo and the Dragon Hunters, Hiccup must learn to out think this dangerous new opponent.

Dagur the Deranged escapes from prison and ventures in the uncharted territories to build an armada against Hiccup and his Dragon Riders. Coming across a cylinder (christened Dragon Eye) that provides information on the uncharted territories, Hiccup and his quirky team search the region looking for both Dagur and hitherto unknown species of dragons, eventually leaving Berk to build for themselves a new and distant base of operations called Dragon's Edge. Written by statmanjeff

Dagur the Deranged escapes from prison and ventures in the uncharted territories to build an armada against Hiccup and his Dragon Riders. Coming across a cylinder (christened Dragon Eye) that provides information on the uncharted territories, Hiccup and his quirky team search the region looking for both Dagur and hitherto unknown species of dragons, eventually leaving Berk to build for themselves a new and distant base of operations called Dragon's Edge. Written by statmanjeff

Dagur the Deranged escapes from prison and ventures in the uncharted territories to build an armada against Hiccup and his Dragon Riders. Coming across a cylinder (christened Dragon Eye) that provides information on the uncharted territories, Hiccup and his quirky team search the region looking for both Dagur and hitherto unknown species of dragons, eventually leaving Berk to build for themselves a new and distant base of operations called Dragon's Edge. Written by statmanjeff

Dagur the Deranged escapes from prison and ventures in the uncharted territories to build an armada against Hiccup and his Dragon Riders. Coming across a cylinder (christened Dragon Eye) that provides information on the uncharted territories, Hiccup and his quirky team search the region looking for both Dagur and hitherto unknown species of dragons, eventually leaving Berk to build for themselves a new and distant base of operations called Dragon's Edge. Written by statmanjeff

Dagur the Deranged escapes from prison and ventures in the uncharted territories to build an armada against Hiccup and his Dragon Riders. Coming across a cylinder (christened Dragon Eye) that provides information on the uncharted territories, Hiccup and his quirky team search the region looking for both Dagur and hitherto unknown species of dragons, eventually leaving Berk to build for themselves a new and distant base of operations called Dragon's Edge. Written by statmanjeff

Dagur the Deranged escapes from prison and ventures in the uncharted territories to build an armada against Hiccup and his Dragon Riders. Coming across a cylinder (christened Dragon Eye) that provides information on the uncharted territories, Hiccup and his quirky team search the region looking for both Dagur and hitherto unknown species of dragons, eventually leaving Berk to build for themselves a new and distant base of operations called Dragon's Edge. Written by statmanjeff

Dagur the Deranged escapes from prison and ventures in the uncharted territories to build an armada against Hiccup and his Dragon Riders. Coming across a cylinder (christened Dragon Eye) that provides information on the uncharted territories, Hiccup and his quirky team search the region looking for both Dagur and hitherto unknown species of dragons, eventually leaving Berk to build for themselves a new and distant base of operations called Dragon's Edge. Written by statmanjeff