When Mrs. Reg, the manager of Pine Hollow Stables, goes away for a few days, The Saddle Club is determined to pitch in and keep things running smoothly. Lisa, Carole, and Stevie decide they know everything there is to know about horses, so they'll have no problem managing a stable for a few days...right? Wrong! instead it seems that every time the girls try to help, disaster quickly follows. More paint winds up on one of the horses than on the stable; several riders don't get quite the ride they expect; and Mrs. Reg's paperwork is in utter chaos. Soon the members of The Saddle Club are wondering if being horse crazy is all they need to manage the stable, after all!