In the midst of the vast and dazzling nature of Klondike, a dog named Buck discovers a destiny that will change his life forever. Raised as a companion dog in a luxurious home, he is soon torn from his comfortable life and sold as a sled dog in the fierce competition for gold. Buck, a robust and brave canine, must learn to survive in an unforgiving world where the law of the strongest reigns, and loyalty is tested at every turn.
As he adapts to his new environment, Buck forms a close bond with John Thornton, a man who recognizes his nobility and indomitable spirit. Together, the two face various adversities, from snowstorms to unexpected betrayals from other gold seekers, which challenge not only their endurance but also their friendship. Buck begins to feel an ancestral call that connects him to his wild roots as he struggles to find his place among humans and in nature.
Throughout his journey, Buck transforms from a domestic dog into a leader among beasts, understanding that his true purpose goes beyond the expectations imposed by humans. The struggle for survival and the quest for freedom intertwine in this moving story, which showcases the strength of the bonds forged in the most difficult moments and the inevitable call of the wild that resides in all living beings.