The three members of the Saddle Club - Carole, Lisa, and Stevie - are the best of friends, bonded by their special love of horses. Now they're together on the long-awaited Mountain Trail Overnight, riding through the pine forests, swimming in mountain-water ponds, sharing a tent under the stars...They are having such a perfect time that nothing - not even Veronica, the richest and snobbiest girl at the stables - can spoil their fun.