The Penny Pony Piper Jones has always loved horses, but little did she know what would happen when she and a friend tried to help a neglected pony. They must find a safe haven for the pony and protect it from its cruel owner. But as the girls try to solve a mystery involving the suspicious owner, will they be forced into crime themselves in order to save their new-found pony friend? Nickel-Bred Piper and Addie find the perfect horse, Nickel, but discover the owner is part of a gang of criminals. Nickel's life is in danger. Can the girls save him from the slaughterhouse? Turn on a Dime Piper's friend, Miss Julie, rents rooms to Cassie and her stepson, Jeff. Cassie has been given the responsibility of checking on Cassie's pregnant mare. Piper doesn't like boys, but as she gets to know and accept Jeff, he is accused of theft, so Piper and her best friend defend him. What will happen when Cassie steals, then leaves the country as her mare goes into labor with no one but the girls and Jeff to help?