Count Arcata, who covets the throne of Darius, ruler of San Gordio, spreads false rumors about Darius' birthright. Darius and the princess flee to the United States to find his birth certificate. They are pursued by Robert and his sister Carmelita, agents of the count, but are able to obtain the document and return to their native land with the aid of cowboy friends. The cowboys, fearing for the safety of their new friends, follow and arrive in time to help Darius secure the throne from Count Arcata's followers. In the end, Paula is made Darius' queen and the cowboys find jobs in San Gordio.