Something's wrong at home and Lisa feels powerless every time her parents get angry at her or each other. When CARL, the County Animal Rescue League, puts out an SOS for volunteers, Lisa knows she's found a place where she'll be appreciated. Before long, a stray horse named P.J. steals her heart. But just as things seem to be getting better, Lisa's parents deliver some news that will change her life forever.Stunned and upset, Lisa pulls away from everyone - even her friends - and devotes herself to caring for P.J. Stevie and Carole know that The Saddle Club can pull through anything, as long as they're together. But how can they help if Lisa keeps shying away? When a fiery and famous show jumping team arrives at Pine Hollow and begins stirring up trouble, Carole and Stevie have to convince Lisa that they need her help - and fast.