As the dragons become more comfortable as a part of Berk society, the livestock are becoming less comfortable - fire-breathing predators are, after all, around every corner. As a result, Berk is running low on eggs, milk and other food supplies.
When Stoick has a portrait of himself and Hiccup painted for the collection in the Great Hall, Hiccup ends up depicted as a strong, burly Viking, not his usual skinny self.
After Heather's betrayal leaves the Book of Dragons in the hands of the Outcasts, the kids devise a plan for Astrid to disguise herself as Heather, sneak onto Outcast Island, and retrieve the book from Alvin and the Outcasts.
For his entire life, Snotlout has been beating Hiccup and the others in the Thawfest games. But this year, the games include dragon-based events, and Hiccup is determined to finally win.
When a series of lightning storms hit Berk, Mildew claims Thor is angry at the village for allowing Toothless, a Night Fury, to live among them. Hiccup must prove Toothless's innocence as he and Stoick face an uprising against Toothless.
When Ruffnut and Tuffnut have a falling out, Hiccup and the kids must reunite them before their wayward Zippleback is discovered by Dagur the Deranged, the visiting chief from the fearsome Berserker tribe.
With Bork Day, the annual holiday celebrating the village's history, fast approaching, Stoick bestows Hiccup with all of Bork's notes and studies on dragons.
