Five former couples travel to a remote island to break free of their toxic relationships forever. The first night, jealousy pushes one of the exes to snap. In therapy, their darkest secrets are revealed.
When Tuffnut is bitten by a strange creature, he believes he will turn into the legendary Lycanwing Dragon when the moon is full. Hiccup and the other riders must save him before Tuffnut goes off to live amongst the dragons forever.
When Frank’s first partner announces plans to publish a book filled with stories of their early days on the force, Frank worries about his personal stories being made public. Also, when Jamie and Eddie catch a call about a nearby officer needing assistance, the choices they each make will affect their future in the department and their relationship.
When Hiccup saves the Zipplebacks life, the grateful dragon abandons Ruff and Tuff and follows Hiccup and Toothless around. Ruff and Tuff try to win their dragon back with disastrous results.
The Skrill returns with a vendetta against Hiccup and Toothless. Hiccup and the Riders must choose a new course of action to stop the rampaging dragon.
The Riders learn from Heather that the Dragon Hunters are after the Flightmare. The Rides race to free the dragon. But could this be part of a larger scheme
While McGarrett and Danny attend a couples retreat in Maui to work on their partnership issues, Kamekonas dangerous past comes back to haunt him.
Dianna struggles to get her new team into shape Crystianna and Faith vie for a solo Dana makes waves in the viewing room Dana wants to give the mothers makeovers.
Featuring M foods, with Cariad Lloyd, Dermot O'Leary, Phill Jupitus and Alan Davies.
Riley is upset when the boys at school won't let her participate in a science experiment and attempts to become more involved.
Tuff and Astrid continue to defend Dragons Edge, while Hiccup, Snotlout and Johann discover an island full of wounded dragons that have been hunted and hurt by the Dragon Hunters.
Hiccup and the Riders must stop Ryker from creating a key to the Dragon Eye, which means a return trip to Glacier Island, this time to protect the Snow Wraith.
When a new tidal class dragon, the Sea Shocker, is found in Edge Cove, the riders must help it escape a group of hungry Scauldrons and reunite it with its migrating pod.
When a distress call from Trader Johann arrives at Dragons Edge, Hiccup, Snotlout, and Fishlegs go to investigate leaving Astrid, Ruff and Tuff to keep watch on the Edge. When Ruff is captured by Dragon Hunters, its up to Astrid and Tuff to defend the Edge.
Major Crimes determines that the kidnapping of a prominent scientist's son was not a crime of opportunity but rather a calculated scheme for revenge.
Christina Tosi brings a special guest into the MasterChef kitchen her mom to present the next mystery box challenge, which will feature all of Christina's favorite childhood foods. Then, contestants will compete in a tag team platter challenge using international street food ingredients.
Viggo has captured Heather and the Flightmare, and now Hiccup must outthink this dangerous new opponent.
Hiccup and Snotlout race to rescue the other riders from the Dragon Hunters.
Flambeau needs Father Brown's help in stealing the Pope's coronation gift to the Queen of England.
In the next team challenge, the junior home cooks will face an egg-cellent challenge and compete in pairs to see who can complete the most deviled eggs in minutes. The team that perfects the most deviled eggs will be safe from the next elimination challenge, in which contestants must create their future cookbook's signature dish.