Orphaned Siblings: The story begins with four orphaned siblings — Henry, Jessie, Violet, and Benny Alden — who decide to run away and make a home for themselves in an abandoned boxcar in the woods.

Independence and Survival: The children demonstrate resilience and resourcefulness as they learn to live independently. They gather food, make the boxcar habitable, and keep their existence a secret from the townspeople.

Discovery of Family Fortune: While exploring the nearby countryside for supplies, the children stumble upon a mystery involving a wealthy but reclusive old man. They eventually discover that he is their grandfather, and they inherit his fortune.

Happy Ending: The story concludes with the children reconciling with their grandfather, who welcomes them into his home. Despite their newfound wealth, the children choose to continue living simply and maintain their strong bond as a family