Description
Henry, Jessie, Violet, and Benny used to live alone in a boxcar. Now they have a home with their grandfather, and are going on a hot air balloon rally.
The Aldens are so excited when they get to meet other balloonists, learn how hot air balloons work, and even help the crew launch a balloon.
Then things start to go wrong. Someone is trying to ruin the rally, and the Boxcar Children might not get the chance to ride in a hot air balloon after all - unless they solve the mystery in time.