When three friends accompany their riding instructor to New York City to attend an important horse show, they meet their favorite actor, who asks them to help him learn to ride for his latest movie.

After she and her Saddle Club friends return from an enjoyable overnight camping trip with other members of Pine Hollow Stables, Carole is delighted to be given the care of a thoroughbred stallion she's come to love.

Carole, Stevie, and Lisa make new friends and have a variety of adventures when they visit Kate on her family's dude ranch near the Rocky Mountains.

Carole trains Samson, Pine Hollow's new foal; Stevie has a visitor from Washington, D.C.; and Lisa begins writing "Hoof Beat," a weekly column for the local newspaper.

Carole, Lisa, and Stevie spend two quite surprising weeks at a Virginia riding camp--and compete in a genuine horse show.

Although the girls are overjoyed when Max forms a Pony Club, Lisa worries that Carole and Stevie will be jealous when she gets her own horse.