为了完成父亲的遗愿，杰克（伊桑·霍克 Ethan Hawke 饰）只身来到了遥远的阿拉斯加寻找金矿。在这里，他遇见了善良友好的艾利克斯（克劳斯·马利亚·布朗道尔 Klaus Maria Brandauer 饰），两人决定结伴共同奋斗。 　　一只名叫白牙的阿拉斯加雪橇犬改变了杰克的命运，将他从死亡线上挽救了回来，而当白牙被赌狗的恶棍们当成摇钱树之时，杰克也毫不犹豫的对其伸出了援手。一人一狗之间，友谊和信任正在慢慢滋生。白牙靠着自己的天赋帮助杰克与艾利克斯找到了金矿，亦保护了金矿不被坏人夺走。当发了财的艾利克斯邀请杰克回纽约一起创业之时，面对依依不舍的白牙，杰克犹豫了。Jack Conroy is a young gold hunter, who seeks for gold in the enormous and the snowy deserts of Alaska. He save one day, a mixed dogwolf from the hands of a cruel man, and a brave friendship develops between the two. The dogwolf, who named "the white fang" for it's sharp and white tooth, was left alone after his mother was killed by a hunter. After a while, the white fang was taken from jack, by a man who put him in an illegal dog fighting pen, to fight other dogs. White Fang becomes a professional, experienced and a cruel killer. But unexpectedly, jack meets him again after a long term, and they return to be friends. When a group of criminals wants to steal Jack's gold, White Fang is the only one who can help him to fight them off.