A long time ago, when the world has not been poured into the steel jungle, when the technology has not yet made up invincible, Scandinavian masters of the land, based on hunting, fishing as the main livelihood of the nomadic Vikings. West down the sun rises in the east, strong, tall Viking and their wives and children, live a happy life comfortable. Just as people today can be flies, mosquitoes, rats, bugs, like those nasty guys disturb and threaten the Vikings have bothered the "pests" - Long. Those flying flame, the canine teeth of the dragon's violations, so Viking no peace. Thus, generation after generation of pirates with tribal chiefs subjects, and the dragon fight to the death battle.
If He Kapu (Jieyibulu Thatcher) father's father's father's father, Dragon heroes are each generation, then as a pirate guide (Gerard Butler) his son , it is no good did not inherit the family lineage. The hand can not blame the children put the shoulder does not challenge, even ants are not trampled to death, the upper and lower body strength of character to find any little pirates. By looking at his skinny little body, he dreams to become a great Viking's "lofty aspiration" was always in exchange for peer ridicule.
When puffing flames of animals again attacked the residence of the Vikings, with his help the blacksmith's master tried to persuade him to hide a bit further.
Small He Kapu partial afraid of evil. Not 6 the abdominal muscles, and his intelligent mind is the most powerful weapon! Build out their own catch a long rope, he secretly with equipment, ready to do the first one caught the "Night evil" people. Qiao was also said that he cat with three legs of the martial arts really caught a lucky hit with the night evil. But no one believed that he hit the most ferocious dragon legends - night ghosts. Disappointed him alone to the jungle to find the night evil figure, fell to the floor when he saw the night when evil, it almost did not wet his pants, he was scared. The courage to bring a knife, He Kapu Yingzhuoxinchang ready to end the knife by ropes tied the dragon only lives! Fear can be evil when you see the eyes of the night, he should not have the unwavering courage is lost. He cut the rope tied to the dragon, but also in fear fed fish, and it established a wonderful friendship, and discovered that in fact the nature of Chun-liang Long warm, perfectly tame. But when the father did not think so commanding, affable chefs do not think he likes the little girl 艾丝特蕾德 (Asia and the United States 莉卡费雷拉) do not think so. One long battle about to begin, in time to prevent the outbreak of small He Kapu absolutely no need to struggle Why?中文意思如下 很久很久以前，当世界还没有被浇筑成钢铁丛林，当科技还没有发达到所向披靡，北欧大地上的主人，是以狩猎、捕鱼为主要生计的游牧维京人。太阳东升西落，强壮、高大的维京海盗和他们的妻子儿女，过着快乐惬意的生活。可就像现代人会被苍蝇、蚊子、老鼠、臭虫这些可恶的家伙打扰一样，威胁维京人的也有烦心的“害虫”——龙。那些飞天喷火、尖牙利齿的巨龙的侵犯，让维京海盗寝食难安。于是，一代又一代的海盗首领们带着部落子民，和飞龙誓死大战。
如果说赫卡普（杰伊·布鲁切尔）爸爸的爸爸的爸爸的爸爸，每一代都是屠龙英雄，那么身为海盗统领（杰拉德·巴特勒）之子的他，实在是丝毫没能继承家族的优秀血统。这个不争气的孩子手不能提肩不挑，连蚂蚁都不敢踩死，全身上下就找不出一点海盗的风骨。光看他瘦弱矮小的体型，他做梦都想成为伟大维京海盗的“远大志向”就总是换来同伴的嘲笑。
当喷着烈焰的飞禽走兽又一次袭击维京人的住地，连他帮忙的铁匠铺的师傅都劝他躲远一些。
小赫卡普偏不信邪。没有六块腹肌，他的聪明头脑就是最厉害的武器！自己打造出了一尊捕龙索之后，他偷偷带着器具，准备做第一个捉到“夜煞”的人。说来也巧，他三脚猫的功夫还真歪打正着逮到了夜煞。但没有人相信他打中了传说中最凶猛的龙——夜煞。失望的他独自一人去丛林中寻找夜煞的身影，当他看到倒在地上的夜煞时，还差点没把他吓得尿裤子。鼓起勇气，提起尖刀，赫卡普硬着心肠准备一刀就结束这只被绳索缚住的龙的性命！可当看到夜煞恐惧的眼神，他本来就不坚定的勇气瞬间消失。他割断缚龙的绳索，还战战兢兢地喂它吃鱼，和它建立了一种奇妙的友谊，并且发现其实龙的本性纯良热情，完全可以驯服。可当统领的爸爸并不这么认为，和蔼可亲的师傅不这么认为，他喜欢的小女孩艾丝特蕾德（亚美莉卡·费雷拉）也不这么认为。人龙激战即将开始，小赫卡普能及时阻止这场完全没必要的争斗么？
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