John Harlan, a crazy prospector living with his daughter in Nevada, accidentally discovers gold. He is so enthused over it that he immediately goes to the town saloon, where he informs everybody. Harriet, the daughter, discovering her father has not returned, goes to the saloon, where she is informed by her half-witted father that he has told the men of the location and that they have already departed for the hidden treasure. Broncho Billy enters the saloon and Harriet implores him to help her keep the men from staking out the property. Driving his stage-coach at dare-devil speed over rocks, through marshes and small streams, he finally reaches a high spot in the road, where the deep canyon yawns below. Harriet unhitches one of the horses and rides to the claim agent's office, where her name is filed on the state's books for the property. With the certificate of the state in her hands, she dashes madly to the gold pit, where she stakes out her claim. In the meantime, the men arrive on horseback and are prevented from passing the coach, which takes up the whole road. Broncho Billy saves the claim for the crazy prospector and wins the hand of his daughter as a reward.