Diego Vega returns from his study trip to find his homeland under the army's dictatorship. Refusing to stand by, Diego disguises himself as Zorro to protect the weak and oppressed. Although Diego is not a coward, he fails to win the affections of his sweetheart, Lolita, who is drawn to other, more noble men. Diego serenades Lolita as Zorro and fights the evils of his homeland, hoping to capture her heart.