When Carole learns that the local thoroughbred breeder plans to send his injured horse, Prancer, to the slaughterhouse, the Saddle Club take desperate action to save the animal.
The Saddle Club plans to horsenap Prancer from her owner, Mr. McLeod, before he can sell the mare to the slaughterhouse, but their plan changes when they discover Prancer has colic. With Gerard Kennedy as Mr. McLeod, Marie-Louise Walker as Eleanor Atwood, Maggie King as Dr. Judy.