During their search for the escaped Dagur the Deranged, Hiccup and the Dragon Riders discover a mysterious object—one that holds their destiny.
The dragon riders discover a lush island that turns out to be the home of the Deathsong, a massive, never-before-seen dragon that threatens to trap them forever.
Hiccup, Toothless and the dragon riders journey to Glacier Island in search of the Snow Wraith, a fearsome new dragon that holds the key to the Dragon Eye's mysteries.
There's no place in modern times for the dashing life of the knights. Falling into lawlessness stands for the demise of the time of the knights and leads us to explore the rise of the robber knights and the end of an era.
During their search for the escaped Dagur the Deranged, Hiccup and the Dragon Riders discover a mysterious object -- one that holds their destiny.
Hiccup and the Dragon Riders journey to Glacier Island to find the Snow Wraith, a fearsome dragon that holds the key to the Dragon Eye's mysteries.
Sabotage is suspected and the onboard paranoia surges when the ship mysteriously veers off course. To bring the systems back online, a perilous spacewalk is required. At the same time, Five makes a shocking discovery.
Thinking he's allergic to his dragon, Fishlegs gets hypnotized. He wakes up transformed into an invincible warrior known as Thor Bonecrusher.
Fireworms invade Dragon's Edge, while Ruffnut and Tuffnut discover that they have an unexpected connection to the island.
Heather joins the Dragon Riders, but it's not an easy alliance, especially when Hiccup uncovers a shocking secret about her true identity.
As a Rumblehorn wreaks havoc on Dragon's Edge, Hiccup seeks the help of Stoick, who forms an unexpected bond with the rampaging beast.
When Hookfang is drawn to a female Monstrous Nightmare, Snotlout tries to break them up before he loses his friend forever.
Graham Norton presents his talk show. Together on his sofa are world champion Formula 1 driver Lewis Hamilton, actor Ewan McGregor, comedian Jack Whitehall and pop superstar Rita Ora, who chats and performs her new single Poison.
Best friends Shelby and Cyd gain the unpredictable power to travel back and forth in time when one of their friend Barry's science inventions goes awry. With their newfound power, the teen besties try to fix the mishaps that spoiled Shelby's plans to ask her crush Cameron out to the school dance.
When Dagur the Deranged captures Gustav, it's up to Hiccup and the Dragon Riders to get him back.
The Dragon Riders are surprised to discover who is behind recent attacks on nearby ships -- and to learn exactly what the ships are.
Hiccup and the Dragon Riders rescue a wounded Speed Stinger and take it back to Dragon's Edge, unaware of the dangers that follow.