本片是驯龙记蓝光碟中附带的短片，由原班人马配音，讲述了另一段冒险故事。小嗝嗝和朋友们与铁匠戈伯（Gobber）一同出发寻找传说中异常恐怖的骨碎龙。
Jay Baruchel
Hiccup Horrendous Haddock III (voice)
Gerard Butler
Stoick (voice)
Craig Ferguson
Gobber (voice)
America Ferrera
Astrid Hofferson (voice)
Jonah Hill
Snotlout Jorgenson (voice)
Christopher Mintz-Plasse
Fishlegs Ingerman (voice)
T.J. Miller
Tuffnut Thorston (voice)
Kristen Wiig
Ruffnut Thorston (voice)
John DiMaggio
Gobber's Father (voice)
Kevin Michael Richardson
Thor (voice)
