Lorelei and Sarah receive a mysterious notice in the mail: Merryvale stables invites you to a most special schooling show--October 32nd--don't bring your nag, horses will be provided. The show will be held in spite of the fog. Take freeway north past forest lake. Exit at Merryvale at the highest rate of speed you can manage. When is October 32nd? How do they know there will be fog? And why can't they take their own horses? Find the answers ... and many more questions ... in this the first of three in the Merryvale series.