Hiccup must help Astrid face her fear of the terrifying Flightmare, a ghostly dragon that seemingly froze her uncle with fear, shaming her family name. With Fishlegs' help, they discover that there's more to the Flightmare than meets the eye. Written by Anonymous

A Terrible Terror training competition leads to a heated rivalry between Fishlegs and Snotlout, allowing Alvin to kidnap Meatlug. The kids must use their newly trained Terrors to rescue their friend.

When dragons start fleeing to Dragon Island, the defenders must find out why the islands are disappearing.

Barf and Belch are Tuffnut's only guard when he gets caught in an old dragon trap in the forest. Things go from bad to worse when Tuffnut is faced with not only a large Typhoomerang, but a deadly forest fire that soon threatens him and both the dragons. Written by Anonymous

When the dragon riders discover a frozen Skrill, a lightning-powered dragon revered by the Berserkers, they scramble to get it off Berk. But when the Skrill is thawed and unleashed, Hiccup and Toothless are faced with a battle between both the Skrill and Dagur's Berserker armada. Written by Anonymous

Tuffnut goes undercover to help the defenders rescue a Skrill.

Snotlout becomes convinced he is dying, and leaves Hookfang to Gustav. But when he miraculously recovers, Snotlout takes his dragon back, and Gustav decides to get a dragon of his own (named Fanghook) and join the academy... whether they want him or not. Written by Anonymous

Hiccup and co. discover an injured Scauldron on the shores of Changewing Island. The kids must heal the dragon and return him safely to the ocean, before he falls victim to the elements, as well as the territorial Changewings.