Cameron promotes her game at an industry conference. Donna squares off against old rivals. Gordon struggles to support Joe's newest idea.
When their sister camping trip is ruined by Fly-ders, Applejack, Rarity, and Rainbow Dash tell Sweetie Belle, Apple Bloom, and Scootaloo the stories of their favorite legends; inspired by the tales, the girls make the most out of their new situation.
Dr. Pol and the clinic encounter a shocking set of cases.
A call in the middle of the night sends Tia racing to deal with a family emergency. A homeless man reaches out for assistance when his dog has trouble breathing. A healthy dog tied up outside VRC leads to a shocking story and a difficult decision.
It's up to Captain Marvel to stop Crimson Widow, Typhoid Mary and Zarda from breaking out of the vault.
Norman Osborn creates the Osborn Academy for Geniuses as a way of saving his son, Harry, the embarrassment of being suspended from Horizon High.
Disobeying Hiccup, the twins follow a retiring Eruptodon to its final resting place, Vanaheim, and learn why no human has ever gone there before.
When a pair of outcasts visits the Edge seeking the help of Thor Bonecrusher, Fishlegs allows Snotlout to hypnotize him to evoke his mighty alter ego.
After the Edge is ambushed by a group of Singetails, the Riders quickly take flight to ward them off, but are shocked when they get a closer look.
An unlikely ally helps Hiccup uncover Singetail behaviors that can be exploited to conquer the Flyers. An overconfident Krogan makes a strategy error.
The Riders flee to Berk, where Stoick's plan for defeating the Flyers, which will require a painful sacrifice, spurs Hiccup to seek an alternative.
After Stormfly tangles with two poisonous Slitherwings while defending Garff, Astrid must risk her own life to get an ingredient to make an antidote.
When Ruffnut refuses to become Throk's bride because it would mean leaving her twin, Tuffnut fakes his own death to give her the freedom to marry.
When Heather goes to meet a man claiming to have seen Oswald, she walks into a trap that forces the Dragon Riders to pay a dear and unexpected price.
A sketch in an old diary leads Hiccup and Fishlegs back to Vanaheim, where they help Dagur search for his long-missing father, Oswald the Agreeable.
Venezuelan president Nicolas Maduro makes moves toward turning the country from a democracy into a dictatorship, creating a growing opposition to his rule.