Anna loves her pony, Acorn. She knows that he is perfect for her. But her parents think Acorn is the reason why she is doing badly in school. If she doesn't get better grades, they will take him away. Pam and Lulu, her Pony Pals, want to help. They know how much Anna loves her pony. Can the Pony Pals help Anna and Acorn? Will Acorn be a pony for keeps? -Back cover.

Ms. Wiggins asks the Pony Pals to take care of her old pony while she is away. Anna loves Winston and is happy to watch over the sweet pony.