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.
On an island that will make the perfect outpost, the Dragon Riders discover that the indigenous residents are a mysterious new breed of dragon.
A hostage exchange with a vengeful warlord turns deadly when the Killjoys find themselves stranded in ‘Sugar Point’ – a restricted, bombed-out city on Westerley overrun with dangerous gangs and scavengers.
When a prize-winning scientist is found murdered on the same night the man intent on murdering Henry Fisher escapes police custody, Phryne must put all misgivings aside to protect her father.
The Dragon Riders discover a lush island that turns out to be the home of the Deathsong, a massive dragon that threatens to trap them forever.
Fishlegs and Meatlug liberate the Gronckles from a menacing dragon that has encroached on their ancestral home, Dark Deep.
Trash talk is in the air when Iron Chef Michael Symon and Author and TV Host Daphne Oz arrive in the arena to beat up on their friend Bobby Flay. Heavy-hitters Chef Sylvia Casares and Chef Braden Wages square off in a battle of sheer will.
Marc tries to connect with his niece by introducing her to her YouTube idol.
After surviving a disfiguring gunshot, Dr. Fredrick Chilton is now focused on rallying support to capture Hannibal, using Will as bait. Jack is distracted by Bella's failing health, but he implores Will to abandon the risky idea of finding Hannibal. Meanwhile, Alana Bloom entertains a different approach, potentially partnering with Mason Verger to utilize his vast resources.