Reluctant hero Hiccup Horrendous Haddock III must rescue his best friend, Fishlegs, from the deadly disease Vorpentitis. The only cure is rare and almost impossible to find ... a potato. But where will Hiccup find such a thing?

Hiccup, the reluctant Viking hero, has three months, five days, and six hours to discover America, return to Berk, save his father, battle Polar-Serpents, and win the annual Inter-Tribal Friendly Swimming Race.

"A dragon rebellion is coming-filled with the meanest, nastiest dragons in the Archipelago. Razor-wings, Tongue twisters, and Vampire Ghoul deaths are attaching Vikings and seem to be seeking one soul in particular: Hiccup Horrendous Haddock the Third! Only a King can save them...and only a champion with all of the King's Lost Things can be King. In his adventures, Hiccup has collected quite a few "things" himself. But can a scrawny Viking save the...

Someone has stolen the Fire Egg. Now the volcano on Volcano Island is active and the tremors are hatching the eggs of the exterminator dragons! Can Hiccup return the Fire Egg to the volcano, stop the volcano from erupting, and save the Tribes from being wiped out by the terrible sword-claws of the Exterminators.

To save his dragon from being banished, Hiccup must sneak into the public library and steal the Vikings' most sacred book.

Abby Beckett comes from a long line of elite Viking warriors known as the Aesir, being trained her whole life to hunt the creatures known as Grendels. The problem is there hasn't been a sighting of a Grendel in centuries and the Viking Council wants to disband the Aesir. But when her father is attacked by one and no one believes her, Abby embarks on a journey to protect her family's name and stop the plot to destroy the Aesir.

Follows the further adventures and misadventures of Hiccup Horrendous Haddock the Third as his Viking training continues and his father leads a stranger and the Hairy Hooligans to the Isle of Skullions in search of a pirate's treasure.

Hiccup Horrendous Haddock III was a Viking hero - dashing, brave and ever so hairy. But even Viking heroes have to begin somewhere...Climbing onto a Roman Dragon Rustling ship by mistake in your first "Boarding an Enemy Ship" is bad enough But to then discover Alvin the Treacherous is also on board proves to Hiccup he couldn't have been more wrong especially when he steals his copy of "How to Speak Dragonese". Can Hiccup save the dragons and the day?...

"Oh, no! One of the special miceking helmets in miceking chief Sven the Shouter's private collection has been stolen! Could it have been taken by the vilekings -- the rival mouse clan? The micekings journey to the vilekings' village to find out . . . and while they're there, the dragons attack! Can all the mice work together to save their fur?"--Page 4 of cover

When thousands of Viking warriors descend on medieval Paris, Dak is captured and forced to work with the invaders while Sera and Riq defend the city, a situation that places them on opposing sides.