In the California hills, Bob Culpepper, a college-educated gold prospector from Tennessee, helps seasoned prospector Silas "Solitaire" Carter defend himself against an intruder's ambush. While digging a grave for the intruder, Bob uncovers a vein of gold that leads to a "mother lode" in a nearby mountain. Ecstatic, Bob and Solitaire head for town to make their claim, but stop to scare off a gang of outlaws who are robbing a stagecoach. The moment Bob sees Nellie Brian, a passenger on the coach, he falls in love with her, and although Nellie, a saloon singer, is equally enamored of the manly Bob, her ambitious mother pushes her to entertain Jack Hanway, the prosperous saloon owner. Unknown to Mrs. Brian and Nellie, Hanway is the leader of the same gang that robbed the stagecoach and took a valuable necklace from Nellie. After Nellie confesses her love for him, Bob cajoles "Missouri," one of Hanway's henchmen, to give him the necklace. Jealous of Bob, Hanway arranges with Missouri and the other outlaws to stage a saloon holdup, which he "bravely" thwarts at the appropriate moment. When Bob tries to expose Hanway's scheme in front of Nellie, Missouri accuses him of being involved in the stagecoach robbery and cites Nellie's necklace as proof. While Bob sits in jail with Missouri, Hanway romances Nellie, who now believes that Bob is a thief. Soon, however, Nellie overhears Hanway plotting to jump Bob's claim, but is unable to alert the drunken Solitaire to the scheme. To prevent Hanway from filing his claim, Nellie makes an early breakfast date with him, then keeps him waiting at the hotel while she files the claim herself. When Solitaire discovers Nellie's claim, he rushes to tell Bob, who assumes that the singer has conspired with Hanway. By staging a phony hanging with a reformed Missouri, Bob escapes from jail and abducts Nellie from Hanway's table. Bob ties Nellie in a straightjacket and forces her to ride with him to the gold claim. After a day of riding together, Nellie and Bob accept the other's innocence and pledge their love. When they arrive at the claim, however, they are surprised by Hanway and his men, who take Bob prisoner. After forcing her back to town, Hanway proposes to Nellie, and to buy time for Bob, she accepts. Solitaire then rides to the claim and arranges with Missouri to have Bob hanged. During the phony hanging, Bob, Missouri and Solitaire flee and ride to town in time to stop Nellie's wedding and expose Hanway as a thief.