Julie, having worked year-round to save money to buy her first Chincoteague pony, realizes she doesn't have enough, but when Pony Penning Day arrives strangers help her make her purchase.
When the Pony Pals discover that Kim's new pony is blind, the girls work together to train the animal and ensure that Dandy will have a long life with their friend.
Lulu's pony, Snow White, who is suffering from strangles, is so lonely from being quarantined away from the other ponies that she breaks out and runs away.
Anna and the Pony Pals have a new job of watching Mimi and her horse and teaching her how to care for her pony, but Mimi may not be able to keep her pony, because she doesn't like to do her chores.