Call of the Wild features Buck (Buck), a German Shepherd, stolen from his California home and brought to Alaska as part of the growing heartless and brutal dog trade during the Klondike Gold Rush. Sold as a sled dog to prospectors John Thornton (Charlton Heston) and Pete (Ralmund Harmstorf), Buck travels through the Alaskan wilderness with the two men, struggling to survive the harsh weather and working conditions. Buck is obedient to his new masters, but other dogs, nearby wolves, and the wild terrain all tempt him to run away. Jack London's 1897 novel has served as the basis of many movies and has been used as a backdrop to feature film stars of the era. These include a 1908 version directed by D.W. Griffith and a 1935 version starring Clark Gable and Loretta Young. In contrast, this 1972 movie remains true to Jack London's novel with its emphasis on the relationships between man, dog, and wilderness.