HOOF BEAT: Lisa's love of horses has grown over the past few months. As a member of the Saddle Club, she feels it's her duty to spread the word about all the good things happening at Pine Hollow Stables. But when her new column, Hoof Beat, starts running weekly in the local paper, Lisa's not getting the happy reaction she expected. Is there a difference between telling the facts, and reporting the news? RIDING CAMP: Carole, Stevie and Lisa are delighted when they get a chance to go to Moose Hill, a sleep-over riding camp in the hills of Virginia. It promises to be two wonderful weeks of riding, meeting new friends and competing in a genuine horse show. But when they arrive, the girls are in for some surprises: their groom isn't doing his job, and their cabin mates are snobs who care more about winning the horse show than making friends. Then an emergency at camp tests everyone's courage .