Hidden Danger plot
"JOHNNY BLASTS PROTECTION RACKETEERS!"
Rancher Terry Mason's cattle are dispersed by James Carson's henchmen because he has refused to join Carson's corrupt Cattlemen's Protective Association. Mason's rancher Perry, who works secretly for Carson, blames the dispersal of the cattle on Russell, the owner of a trucking company. Pussell enlists the help of gunslinger Johnny Mack to help him fight Carson and his gang. Meanwhile, Carson enlists his cousin Valerie to seduce Terry Mason in the hopes that he will eventually join his 'Cattlemen's Protective Association'.