巴克是一只骨骼壮硕身材强壮的狗，本来在大法官家里过着养尊处优的生活的它，被园丁偷走，卖到了严寒的阿拉斯加，成为了雪橇犬。巴克坎坷的命运并没有就此终结，之后，它又辗转经历了好几个主人，他们残暴而又冷酷的对待巴克。不仅如此，巴克在狗群中也为了保住自己的地位而经历了巨大的挑战 。 　　这一次，约翰（哈里森•福特Harrison Ford 饰）成为了巴克的新主人，幸运的是，约翰是一个善良的男人，他不仅非常温柔的对待巴克，还治好了它伤痕累累的身体。随着时间的推移，一人一狗之间产生了坚实的友谊。然而，在一场意外中，约翰被印第安人杀死了，愤怒的巴克失去了理智，它要为自己的主人报仇。The Call of the Wild is a vibrant story of Buck, a big and kindhearted dog, a crossbreed between a St. Bernard and a Scotch Collie, whose carefree life of leisure was suddenly upset when he was stolen from his home in Santa Clara County, California and deported up north, to be sold in Skagway, Alaska, and taken further north, to Dawson City, Yukon, during the late 1890s Klondike Gold Rush, when strong sled dogs were in high demand. As a newcomer to the dog team delivery service - and not before long their front-runner - Buck, a dog like no other, who had been spoiled, and who had suffered, but he could not be broken, is having the time of his life. Forced to fight to survive, eventually taken by his last owner, John Thornton, to proximity of the Arctic Circle, somewhere between Yukon and Alaska, he progressively depends on his primal instincts, sheds the comforts of civilization and responds to "the call of the wild", as master of his own.