The film is based on the novel of the same name by Jack London. In the center of the story will be a dog named Buck, a cross between a St. Bernard and a Scottish shepherd, who was forcibly taken from Sunny California to be used in the North, where he was forced to work in a team of the postal service. When the traveler John Thornton meets with Buck, he decides to save the dog from cruel owners. Together they will go on an exciting adventure through the picturesque expanses of the Yukon, where civilization has not yet reached.