General Arleno, the last grandee of the old Spanish regime, refuses to sell a certain sea-girt tract in California a big corporation for harbor purposes because it will dispossess his poor fisher folk. The railway discovering that his grant has a defect of title, take forcible possession, trusting luck to fight out its claims in court. Their harbor engineer, who has been called for this project, has fallen in love with a fair Californian at the closing of a mission school. She makes her home at the house of her uncle General Arleno, and when she returns there and finds her lover directing the invasion against their ancient estate, she gives him the hardest fight of his life; but, love finds a way and it ends well for all concerned.