Vera Ralston plays Joan Milna, who shares several thousand acres of valuable Montana timberland with her stepfather (John Alderson). Coveting Joan's property, lumber baron Eric Warren (Ray Collins) sends out his foreman Boyd Caldwell (Rod Cameron) to persuade her to sell. Instead, Caldwell falls in love with the girl, vowing to protect her trees from the eco-unfriendly Warren. Republic's wide-screen Naturama process is shown to good advantage throughout Spoilers of the Forest.