Lieut. Wallace leaves his fiancée, Dorothy West, to cross the border with his troops into Mexico. Later he is wounded, captured and taken to the hacienda of the Mexican officer, Senor Paranze, where his wounds are dressed by Senora Paranze. The latter falls in love with the American when he defends her from her brutal husband. She is about to aid him to escape when she discovers that he has a sweetheart. Learning who the girl is, Senora Paranze bids Wallace go to a certain spot and there await further instructions as to his escape. She then writes a note to Dorothy telling her to meet her wounded lover there. Dorothy receives the note and with her father makes a night ride to the spot. On arriving, the three Americans are captured by Mexican bandits. The Senora had arranged it. She awaits to enjoy the sight of her triumph. But it is more than she can stand; she attempts to secure their freedom. Unable to do this she returns to her husband. In the meantime Dorothy secures a knife and cuts the bonds of her lover and by an adroit action the pair holds up the chief and the band. They escape to be pursued across the border, where a skirmish takes place. A squad of American cavalry rescues the lieutenant and his party and drives off the Mexicans.