Steven Jarrow, engaged in smuggling arms across the border, keeps the secret from his son, Logan. Valdez, the Mexican colonel, in charge of the Federal troops stationed there, has a very pretty daughter, with whom Logan is deeply in love. A gun smuggling expedition is planned. Federal headquarters receive warning and Colonel Valdez determines to annihilate the smugglers. During the action Logan's father is killed and it devolves upon Col. Valdez to convey the sad news to Logan. The young man, not knowing of his father's career, and believing his death was caused by unfair means, swears vengeance against his sweetheart's father. However, he is saved from becoming a murderer by the cool-headedness of the brave colonel. John Bridge, one of the smugglers who managed to escape, is crazed by the death of his comrades and seeks to avenge them by taking the life of Colonel Valdez. Logan is arrested for the crime, but is cleared through the instrumentality of Bridge's wife.