A horse-race brings together Kentuckian Natalie Chester and Argentinean Manuel La Tassa. At a party Pedro De Grossa insults Natalie, and consequently Manuel challenges him to a duel. To assure his son's success Carlos De Grossa hires Gomez to ambush Manuel. While Manuel is recuperating Natalie discovers the perfidy. She bribes Gomez to expose the De Grossas, Pedro leaves the country, and Manuel finally accepts his duty to participate in his government with the help of Natalie, his new wife.