The Great Pony Hassle

4 girls and only 1 pony! When their mother remarries, twin sisters Toni and Staci get . . . twin stepsisters! Toni and Staci have almost nothing in common with their new siblings-Paisley is loud and spoiled, and Stirling is pretty and perfect-but all of the girls love horses. When Paisley brings home a pony of her own, with a sugar-colored mane and sweet dark eyes, the rest of the sisters are consumed with jealousy. How can 4 horse-crazy girls get along when there's only 1 pony?