With the Dragons causing intolerable friction with the Berkians with their instinctual habits, Hiccup must enable a reasonable co-habitation.

With Gobber feeling useless with the Dragon peace, Hiccup must find a new role for him.

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. Written by Anonymous

The Dragon Riders find a small dragon in the woods, which Hiccup is volunteered to take home.

When the dragons are blamed for a series of damages around the village, Hiccup and the kids form the Dragon United Monitoring Brigade (aka DUMB).

After the dragons are banished from the island, Hiccup searches for evidence to prove their innocence.

Stoick resolves to learn dragon riding himself from Hiccup, but he seems to prefer Toothless to his son's annoyance.

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.

When the Riders discover that Mildew deliberately sickened the dragons with a special flower, Hiccup and Stoick force him along to find a cure.

The Riders take in a lost girl who seems strangely curious about dragon training.

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.

A rogue dragon - a Whispering Death - shows up in Berk, tearing up the village. He's on a mission - to find Toothless and settle a score.

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.

Hiccup and Snotlout face difficulties getting home from Outcast Island.

The gang visit a haunted bog to retrieve a lost gift for Hiccup.

Fishlegs discovers a gem that is of great value to a flock of dangerous Changewings.

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.

Conclusion. Hiccup and Toothless hatch an escape plan after being trapped on Outcast Island.