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The Blue Streak (William Nigh) has been so-named by his former outlaw father because he feels that his son has inherited his weak ways from his blue-blood mother. But the Blue Streak goes on to earn a reputation in the Wild West with his skillful riding and shooting. He and two of his comrades alight in a frontier town and interrupt a card game where the saloonkeeper's daughter (Violet Palmer) has just been won in a round of poker. He takes the girl himself and returns to his shack. But when he finds she has some baby clothes, he believes that she is an unwed mother-to-be. So he heads back to town and fetches the local bar-fly (Ruth Thorp) to nurse the girl. The baby clothes, it turns out, are the girl's own, saved by her mother, but the bar-fly tells her to keep up the ruse. The girl pretends to lose the baby, but the truth finally comes out. The sheriff (Ned Finley) is about to come and get the wayward Blue Streak, but the girl suggests that they make a getaway, and they do. They return to the Blue Streak's estranged father, where he is forced to welcome his new daughter-in-law.