Buck lived a comfortable life in California at Judge Miller's house. But all of a sudden he was stolen and sold to a dog trader. The Gold Rush needed strong and fast dogs. That is why Buck goes to the North and becomes a sledge dog unwillingly. He finds himself in a new life full of different dangers. He faces hard work unbearable cold huge hunger and cruel enemies. Buck has to follow the law of club and fang so that to survive among dogs and men in the North. He almost forgot the notion of friendship and mercy in the hard conditions of his new life.

Soon Buck's life changes once and for all. He meets his true master whom he loves with all his heart. Buck has many adventures with his master all over the North. Is Buck's love stronger than his old instincts? Will he follow the wild call in the forest? Or will he stay with his master?

This is an amazing story about the dog's will-power and loyal heart.