Dragons: Race To The Edge

While searching for gemstones. Johann drives Hiccup to the Sandbuster's lair and Johann helps Hiccup find all the required gems and then Johann reveals his deception and demands Hiccup the dragon eye lenses.

Stoick and Hiccup argue as Stoick is determined to procure willow bark for Berk while Hiccup has a nagging suspicion that all is not what it seems. Three traders compete to become Berk's new supplier.

The Riders host a meeting on Defenders of the Wing Island to discuss the threat Johann poses, however, Dagur and Mala constantly disagree with each other's ideas. Through Ruffnut and Tuffnut's mediation, Dagur and Mala actually get along and develop a mutual attraction for one another. Meanwhile, Hiccup and Snotlout travel to Wingmaiden Island to escort Atali to the meeting, where Atali leaves her second-in-command, Minden, in charge of the island, though Minden is upset at not being allowed to attend the meeting as well.

After learning his ancestors were dragon hunters who killed off the Dramillions, Fishlegs sets out to Dramillion Island with Astrid (against Hiccups wishes) to find and help protect the Dramillions from harm. Before setting out, he remembers his dragon scouts are coming and leaves the twins to look after them. After arriving, he immediately finds one and tries to train but discovers it is very aggressive and has the unusual ability to mimic the fire blasts of other dragons, such as a Gronkle's lava blast and Nadder's magnesium fire breath

Hiccup grows weary when Gruffnut arrives on the twins' 19th birthday to administer a Thorston coming of age ritual involving three dangerous challenges

While wondering what to do with loads of scrap metal, Dagur and Mala arrive on the Edge to announce that Dagur has completed Mala's king trials and are to be wed. After hearing this, Astrid starts to think that Hiccup isn't interested in her anymore since they are not as publicly affectionate as Dagur and Mala and begins to question her relationship with him

While visiting Wingmaiden Island, the Riders get to witness the ceremony where newly hatched baby Razorwhips choose their Wingmaidens. One baby ends up choosing Ruffnut, whom Atali insists must become a Wingmaiden. Though Ruffnut struggles with the tasks to care for her Razorwhip, named Wingnut, she only succeeds thanks to Tuffnut's secret assistance. Despite Atali's encouragement, Ruffnut is certain that she cannot be a Wingmaiden and that Wingnut is better off without her.

Viggo is betrayed by Johann but manage to stay alive and contact Hiccup in order to plot a double-cross scheme against Johann and Krogan

The gang realize that Krogan uses DeathSong dragon to catch more SingeTail dragons, but when they free the dragons they don't fly away and the gang try to figure out why

In one of the Berkian patrols Stoick gets hurt, and when Hiccup heard about it he blamed himself all the way to the beginning of the Human-Dragon relationship

The Flyers follow Heather Vanaheim and attack it, assuming the last lens is there, and leaving a great destruction. The Riders arrive just in time to clean the mess

The Riders and the Flyers go to Dramilion island, led by the complete dragon eyes. And again, Hiccup realizes that Johann and Krogan are one step ahead of him and struggles to catch up

The riders race to the home of the true King of Dragons. But the flyers are already there, and they soon come face to face with the legendary creature