Could it be a ghost horse? Mandy and James are sad because their friend Wilfred Bennett has to sell his riding stables. Things get even worse when Sam Western turns the land into a campsite and wants everyone to forget the stables ever existed. Now campers are telling stories of a ghostly horse and rider passing through the campsite - the vanishing into the night air! Mandy and James don't believe the spooky tales, but can they figure out what is really going on?