"When the Alden children see odd lights coming from a closed amusement park and they receive a phone call warning them to stay away, they are determined to figure out what is going on at the park"--

Because they do not want to be separated, four orphaned children run away and live in an old abandoned boxcar

In the year before they become the orphans known as the Boxcar children, Henry, Jessie, Violet, and Benny Alden live with their parents at Fair Meadow Farm, where, although times are hard, they take in a family who has been stranded in their car during a blizzard.

Six children help solve mysteries.