 An extortion gang, headed by Banker J. M. Bradley (Alden Chase), controls the cowtown of Miller s Flats and saloon owner McClure (Jack Richardson) aids Bradley in operating a so-called "business protectice organization". Garrett, reform editor of the newspaper is murdered, and Marshal Tim Hammond (Tim McCoy) arrives to find his father, Parson Hammond (John Elliott), has also been killed. Garrett s young son, Jerry (Robert Winkler), takes Tim to his sister Betty (Inna Gest), who is now editing the paper. Slim Doyle (Carleton Young), collector for the gang, is beaten up by Tim as he tries to collect money from Betty. Under the name of Hays, Tim opens up a blacksmith shop. Bradley discovers Tim s true identity and orders him eliminated. With the aid of Sheriff Kramer (Ted Adams), Tim has Slim arrested on a trumped-up charge of murder, and then incites the townspeople to stage a "fake" attack on the jail to lynch Slim, who breaks down and offers to confess. Betty is informed by telephone that the gang has kidnapped Jerry and he will only be released in exchange for Slim. The sheriff and Tim fake a fight that allows Slim to excape, but Tim has men posted along the road to watch where Slim goes. Tim and a posse follow and wipe out all the gang members except the unknown leader. While searching the hideout shack, Tim sees some peculiar characters scrawled on a wall, and remembers having seen Bradley scratch similar figures on his desk. This gives Tim sufficient evidence to go after Bradley.