Roy investigates the local miser's claims that someone is breaking into his remote cabin but not stealing anything. Roy tries to convince the old man to come into town and bring any money he has hidden with him, but his advice is rejected with disastrous results.
Acting Sheriff Roy prevents Mineral City's mayor and his henchmen from framing local Indians in regard to a recent series of shootings. The shooters have been wearing ritual Indian masks, which adds further difficulty to Roy's attempts to clear his Indian blood brothers.
An outlaw gang leader loses his prize horse that he has used to out-run many a posse. Realizing he needs his trusty steed to steal $50,000 being shipped to the local bank, he forces Roy to find his horse in a hurry.
Elderly homesteaders run afoul of two itinerant prospectors, who eat them out of house and home. When one prospector turns to bank robbing to make ends meet, Roy, Dale and Pat get called into action.
Roy's cattle drive is marred by a string of near-fatal accidents. On top of that, his ranch hands start disappearing, one by one. Roy has to find out who's behind these "accidents" and "disappearances".
When Sheriff Blodgett suddenly disappears, a note is found that indicates the sheriff has left in shame after having taken bribes. Roy doesn't believe it, though, and sets out to find Sheriff Blodgett and clear his name.