Meet Henry, Jessie, Violet and Benny, four orphaned brothers and sisters who mysteriously appear in a small town on a warm summer night. No one knows who these young wanderers are or where they have come from. Fearful of being sent to live with a grandfather they have never met, they turn an abandoned boxcar into their new secret home.
Ambitious and resourceful, the courageous children make a happy life for themselves. As time passes, they discover the struggles and rewards of independence as well as the joys of family.