Craig Ewell and Norris Griggs are in love with pretty Alice Graham. One night the Limited is held up and Craig is accused. He is tried and found guilty. Alice is stunned by the fate of her sweetheart and is forced into a loveless marriage with Griggs. Ten years later, Craig is freed and wanders heartbroken to the Pacific coast. Griggs has become the financial leader in a Mexican revolution plot. One night Craig is discovered watching a Rebel ship being loaded with contraband arms and is put to work on the vessel. He overhears the revolutionists' plot, and, after a terrific hand-to-hand battle, swims to shore and gives the alarm. The Federal troops, guided by Craig, rush to the scene and a battle takes place. Griggs and Ewell, not recognizing each other, engage in an encounter in which Griggs is mortally wounded. Craig carries him out of the line of fire to a hut. Here Griggs summons a padre and confesses to having planned the train robbery to implicate Craig and to get him out of the way. Hearing his name mentioned, Craig hastens to the bedside and the two men recognize each other. The shock kills Griggs and Craig is left with a written confession. He then returns to Alice and a beautiful reunion takes place under the old plum tree.