Roy Rogers, foreman of the Arrowhead Ranch, is saddened and angered when his pal, Rusty Grant, is killed by a gang of fur thieves who have been operating in the area for four months. The secret leader of the gang is Jerome Banning, who manages the ranch for New Yorker Joan Stuart. Joan, who inherited the ranch and local trading post from her father, has never met Banning, and despite her late father's trust in him, has grown suspicious of his numerous reports of the thefts. Along with her maid Sally, who has become engaged to ranch hand Pat via a Lonely Hearts Club, Joan travels to the ranch, where she intends to conceal her identity while investigating Banning. On the day of Joan and Sally's arrival, Roy and his men have a run-in with two members of the gang, but escape. Although Roy and Joan like each other immediately, Joan is put off by Roy's disparaging comments about the ranch's owner, whom he assumes is a dizzy society woman. Meanwhile, members of the gang pressure Banning to get rid of Roy, for they are afraid that he is getting close to uncovering their operation. When Roy arrives in town soon after, Banning orders him to get rid of the two women staying at the ranch and casts aspersions on their characters. Outraged, Roy punches Banning, who then fires him and orders him to vacate the ranch immediately. Roy's friends, including cook Gabby Whittaker, quit and persuade Joan and Sally to accompany them to a cabin in the hills, from which they will continue to look for Rusty's killers. The men receive a tip about the gang's whereabouts, but when they arrive, the thieves run off, leaving behind a large number of furs. Just then, Sheriff Wilson arrives and arrests Roy and friends on suspicion of theft. Roy realizes that they have been set up, but the sheriff jails them anyway. Some of the gang stir up a lynch mob, which just misses capturing Roy and his friends as they escape from the jail. Meanwhile, Joan and Sally, who were captured by the gang after they witnessed Roy being framed, have escaped from the gang's mine shaft hideout. The two women find Roy and the others and lead them to the hideout, where they elude the pursuing posse. Roy's men chase the gang through the shaft and out the other side, where they are in turn chased by the posse. Everyone hides in the rocky hills, and a shootout ensues, during which Roy gives himself up to Wilson to prove his good intentions. Together, Roy and Wilson apprehend Banning, but Wilson is forced to shoot the manager when Banning draws his gun. Soon after, Joan reveals her true identity to Roy, and woman-hater Gabby grouses as Roy and Pat sing to Joan and Sally about romance on the range.
