Pretty Letty King is the tomboy on Bar Z ranch. She fills the washing pans full of salt and when the boys come in from the corral at noon to wash, an awful time follows when they get their eyes and noses full of the smarting substance. Then Letty ties a lariat to the tablecloth, attaches the other end to a moving buggy and the boys' dinner is deposited on the floor. One morning, in the town store Letty meets Arthur Springer, an easterner, and the bond of affection springs up between them. Letty is also loved by Jim Dunn, a cowboy, and it goes hard with him when Letty returns his ring and announces her engagement to Springer. Two months later the stage drives up and Springer prepares to depart to the city with Letty to be married. The assembled cowboys give them a cheery departure, and Dunn watches the stage disappear down the long trail with dull agony written on his brown face. About this time Bob Blake, county sheriff, receives a notice from the Chief of Police of Cheyenne advising him to arrest Arthur Springer, wanted for wife abandonment. Meeting Dunn and the boys on the trail Blake informs them and a wild ride begins after the stage. Overtaking it the boys force Springer to clamber out and confess his guilt while Letty looks on in horror. Springer is led off under arrest and the boys conduct Letty back to the ranch house where she sobs out her misery until a touch on her shoulder causes her to look up into the kindly face of Dunn. Mutely he holds out the old engagement ring and a moment later the repentant tomboy is clasped in his arms.