Marian, in truth a quiet and reserved girl from the East, in the new tonic atmosphere of Arizona seems to change her nature and through a series of misunderstandings is given the title of "The Holy Terror." Out in the Arizona town where she has come to help her uncle run the village grocery store, attractive girls are rare, and the grocery easily becomes the rallying point of the young fellows for miles around. Dave, the champion cowpuncher, is the first to become acquainted with her. The grocer is talking to the girl, when a ham that is tied to a rafter overhead falls, striking him on the head and knocking him down. He thinks that Marian struck him because he accidentally touched her hand. He immediately starts into circulation a yarn about the awful "wallop" that Marian carries in her left mitt, and they are all thunder-struck, as her appearance betokens nothing of the Amazon. At a "sociable" given a few nights later, Dave suggests "Post office," in which he kisses a girl that Bob Benton has brought, and is correspondingly sore when she pays tribute. Dave calls for Marian and the others push her into the room. She breaks away, however, and all the others follow except Bob, who rolls up his sleeves, showing a muscular arm, and sneaks back into the room, where Dave, blindfolded, is groping about, trying to catch Marian. Dave hears the door open and comes forward with outstretched arms, when he gets a crack on the jaw that sends him down for the count. By the time he recovers Marian has been dragged back into the room, and he sees her standing before him as he opens his eyes. He decides that the episode of the grocer is true, and that she is "the only real white hope" in existence. Dave and the other cowpunchers concoct a plan to get even with Marian, but she gets wise to their plans and turns the joke upon them. This kills all the ambitions of Dave, and the preacher persuades her to marry him, and then in his own effective fashion puts another good one over on the boys; so that the cowpunchers hold a meeting and vote in unison: "It is a tough old world."