The old stage driver and his pretty daughter live happily in a prosperous mining town. The girl is devoted to her kind old father who has been the stage driver for several years. Needless to say, the girl is a splendid horsewoman and has learned to drive the stage. Her lover is the sheriff, and is an intimate friend of her father. On one of his trips, the stage driver is entrusted with $5,000 in gold, which he is to deliver to the post office in the next town. Two wily Mexicans overhear the conversation between the stage driver and the sheriff concerning the money. They decide to hold up the stage that night. Ruth kisses her old father good-bye, little dreaming that it is for the last time. The stage is held up by the two Mexicans. The old man fights for his life and his charge. The villains do not hesitate to shoot the old man, and after pocketing the gold depart, leaving the body of the stage driver in the road under the stage. At the village it is discovered that the stage is overdue and a party is sent out. They find the body, and hastily send out a posse to catch the murderers. When the daughter is informed of the tragic death of her parent she is overcome, and her lover promises to avenge his death. In the meantime the Mexicans are hiding in the mountains with the booty. They each try to steal the gold and cheat the other, ending in a bitter quarrel. After a few days of mourning, Ruth decides to take her father's place. The next pay-day comes, and once more gold is sent to the next town via the stage. The brave girl fears nothing. But once again the pair attempt their nefarious work and the girl is tied to the stage by the wrists. All seems hopeless, but the sheriff, fearing that some evil may befall the girl, follows, and he finds her in this awful plight. He quickly cuts her bonds, and together they muster a crowd of miners in the village who determine to wipe out the hold-up men. Then commences a series of fights and captures. The Mexicans hide in the underbrush, and are about to make their escape when they are caught, and then justice is done. They meet their deserved fate.