Henry, Jessie, Violet, and Benny Alden once lived in a boxcar, but now live with their grandfather in Greenfield. They've become friends with Kevin Reynolds, their favorite hockey star. He wants to build an ice rink in Greenfield, and begin a girls' hockey team. But now, equipment is missing, and someone is trying to ruin plans for the rink. The Boxcar Children must help their new friend solve this mystery