"The Boxcar Children" is a children's book series created by Gertrude Chandler Warner. The story follows four orphaned siblings—Henry, Jessie, Violet, and Benny—who run away to live in an abandoned boxcar in the woods. They learn to take care of themselves while exploring themes of family, resourcefulness, and adventure. As the series progresses, the children face various challenges and meet new friends. They often solve mysteries and help others, showcasing their cleverness and teamwork. The books emphasize the importance of love, loyalty, and the bond between siblings as they navigate their new lives together.