After successfully prospecting in Death Valley, John Stuart Webster boards a train for Denver and rescues Dolores Ruey, a beautiful Central American girl who was reared in the United States, from a masher. Webster learns that his pal Billy Geary has discovered gold in Sobrante, Central America. He leaves to help, but develops ptomaine poisoning on the way. After recovering in New Orleans, Webster saves a man from being killed in a park. Later, the man, Ricardo Ruey, hides in Webster's steamer room and relates that his father, the former president of Sobrante, was assassinated by the present ruler, Sarros. In Sobrante, Webster finds that Geary is in love with Dolores, who arrived earlier. After sending Geary to marry Dolores while he develops the mine, Webster learns that Dolores is Ricardo's sister, although neither knows this. While fighting for the victorious Ricardo, who becomes president, Webster is wounded. He recovers to find Dolores nursing him, and when she says that she does not love Geary, he confesses his love. Finally, they make plans to marry.