When four abused and neglected horses are seized by the Kenwood Animal Rescue Society, Jessa convinces Mrs. Bailey that Dark Creek Stables would be a perfect foster farm for one of them, but nobody is prepared for the challenges of Sienna's rehabilitation. Can Jessa and her friends save the young renegade mare from the slaughterhouse? Why is Mrs. Bailey behaving so strangely around Walter Walters? And what is Jessa going to do with Romeo, the lovable mutt who shows up at the little house on Desdemona Street and refuses to leave?