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.

A western in which Calamity Jane's rightful ownership of a gambling hall is challenged. She nearly loses the business to a shady crook, but Texas lawyer Ellison puts up a legal battle to help her stay in charge. After a sensational fight, the letters proving her right are discovered.

Jean Loring has her men illegally killing and selling game. Roy suspects her and gets himself invited to stay at her ranch. Investigating he finds the freezer where the slaughtered game are kept. But he is caught, tied up, and left to freeze.

Unable to keep peace between frontier Indians and the US Cavalry, a heroic Captain risks court-martial to prevent bloodshed.

Twenty years earlier Farrell killed his mining partner Andrews. Now Andrews daughter arrives to get her father's trust fund. Farrell having rustled Roy's cattle now takes her money from her Lawyer and lets her overhear false information of their next rustling job. With the posse at the wrong location, his men attack the cattle train and Roy on board find himself greatly outnumbered.

Sintown is just a deserted ghost town until Vanerpool starts looking for silver. Cookie and Roy's partners put $20,000 into the business only to find that the mine is worthless and Vanerpool is bankrupt. Carol comes out to look for silver to save the company, but does not know that their engineer, named Regan, is crooked and wants all the silver for himself. But only Old Ed knows where the mother lode is located.