A young boy named Arthur and his cousin Cynthia adopt make-believe royal roles and leave home, embarking on a string of adventures among oil fields, rivers, and railroads. The plot traces accidents and rescues, flights from danger, encounters with tramps and thieves, hardship and penniless wanderings, and efforts to earn a living and find a home. Episodes include a dramatic oil-tank fire, a stolen ark, freight-car journeys, and a railroad crisis, while practical facts about petroleum and regional development are interwoven with themes of courage, loyalty, resourcefulness, and maturing responsibility.