When Viggo puts a bounty on Hiccup's head, every dragon hunter in the world goes after Hiccup, so Toothless and the Riders must rescue him.Source: CBBC
Race To The Edge: 26. Shell Shocked Part Two
An extremely powerful new dragon attacks Dragon's Edge, and Hiccup makes a dangerous alliance while the fate of the Dragon Eye hangs in the balance.
Race To The Edge: Episode 25
Hiccup doesn't know who to trust when Viggo and Ryker each tell him that the other has gone rogue, and is sidetracked when a new dragon attacks.
Race To The Edge: 24. Blindsided
A huge storm hits Dragon's Edge, causing the Dragons to spook and run off. But when Astrid is blinded, Hiccup must lead her to Stormfly.
Race To The Edge: 10. Twintuition
When the twins journey to the Northern Markets to fix their prized mace, they end up stumbling onto a secret project by Viggo and the dragon hunters.
Race To The Edge: 9. Out Of The Frying Pan
When the eruptodon can't take its egg into the Great Volcano, Hiccup and Fishlegs must go into the dangerous volcano with the egg before it's too late.
Race To The Edge: 8. Gold Rush
Animated series based on How to Train Your Dragon. Hiccup and the Riders, with help from Dagur, hatch a plan to steal Berk's gold back.
Race To The Edge: 7. The Longest Day
During the week of the midnight sun, when the sun doesn't set for a week, Hiccup must deal with sleep deprivation and a dangerous new dragon.
Race To The Edge: 6. Dire Straits
Viggo gets angry at the dragon riders continually interfering with his business and uses a deep sea dragon, the Submaripper, to control Berk's trade.
Race To The Edge: 5. Saving Shattermaster
Animated series. When Mala and the Defenders of the Wing find a mysterious stranger who looks suspiciously like Dagur, Hiccup and Heather go to investigate.
Race To The Edge: 4. Not Lout
When Snotlout messes up a mission, he must learn to be a leader and earn the trust of the other riders.
Series 1 - Gem Of A Different Colour
Animation. When Snotlout and the villagers mistake dragon eggs for gems, Fishlegs must reunite the eggs with their mothers.
Series 1 - Portrait Of Hiccup As A Buff Young Man
Animation based on How to Train Your Dragon. Believing his father is disappointed in him, Hiccup sets out on a dangerous treasure hunt.
Race To The Edge: 1. Enemy Of My Enemy
After Hiccup is shot down on a remote island while searching for Viggo and the Dragon Hunters, he questions Dagur's intentions to rescue him.
Race To The Edge: 14. Defenders Of The Wing Part 1
Animated series based on How to Train Your Dragon. The Defenders of the Wing are a local island tribe, which worships dragons and believe the riders have stolen their protector ...
Series 1 - Dragon Flower
Animation following on directly from How to Train Your Dragon. After a visit from Trader Johan, the dragons fall mysteriously ill.
Race To The Edge: 12. Gruff Around The Edges
When a distant cousin of the twins named Gruffnut arrives on Dragon's Edge, Tuffnut tries to impress him. However Gruffnut may not be the hero he seems.
Series 1 - Heather Report - Part 2
Animation based on How to Train Your Dragon. Hiccup and the gang infiltrate the outsiders in order to free Heather's parents.
Defenders Of Berk - Tunnel Vision
Animated series. When the town's well runs dry, Hiccup and Toothless discover a group of baby whispering death dragons living in the tunnels underneath.
Series 1 - Defiant One
Animation based on How to Train Your Dragon. Toothless' prosthetic tail is damaged and Hiccup and Snotlout have to work together to return home before they are captured.