For as long as Carole and Lisa have known their best friend, Stevie, she’s been at war with one – or all – of her three brothers. In fact Stevie never misses an opportunity to tease Chad about his current girlfriend, dye Alex’s underwear pink, or put stones in Michael’s lunchbag. But all that changes when Stevie’s twin, Alex, contracts meningitis, and becomes seriously ill. This time Stevie is looking for a way to show one of her brothers just how much she cares...

Emily has cerebral palsy, but she and her specially trained horse get around just fine. The Saddle Club girls make friends with Emily and even take her on her first trail ride.

Spoiled brat Veronica deAngelo got an expensive new horse for Christmas. She's hardly given a backward glance at her other horse, an Arabian named Garnet. The Saddle Club girls are determined to find a loving new home for the unloved mare, but it won't be easy. What will happen to poor Garnet?

The girls of the Saddle Club--Stevie Lake, Carole Hanson, and Lisa Atwood--and their friend Emily have headed West to the Bar None Dude Ranch. Emily has cerebral palsy. She's helping the ranch's owner make it accessible to riders with special needs. At the ranch, they meet a girl their own age--a former rider who has lost part of her leg in a motorbike accident. She doesn't plan to get on a horse ever again. In the meantime, the Saddle Club and Emily are riding so much, they're saddle sore! Is it possible to have too much of a good thing?

When Lisa's visitor, Merrill, wants to take a beloved stable horse home to Maine, The Saddle Club must persuade her that she can ride any horse well, not just one favored one.

Carole Hanson writes a letter to the daughter of a Middle Eastern President inviting her to come riding at Pine Hollow. She hopes she might get a reply with an interesting stamp, instead she gets security guards roaming the grounds looking for spies. When a real spy shows up, it's the Saddle Club who rides to the rescue.

Zachary falls apart during a show and Carole must persuade Zach to keep riding.

The Saddle Club girls have an intensive, adventuresome month at Moose Hill Summer Camp.

Stevie Lake gets conked on the head, and while she's in the hospital, she has wild dreams about herself and her friends.