The Aldens begin their adventure by making a home in a boxcar. Their goal is to stay together, and in the process they find a grandfather.
Henry, Jessie, Violet, and Benny are brothers and sisters. They're orphans too, and the only way they can stay together is to make it on their own. When the children find an abandoned boxcar in the woods, they decide to call it home—and become the Boxcar Children!