Buster John Allen got a pony for his birthday. Her name is Meg. However, the excitement of a new pony very quickly turns into frustration for Buster John Allen as Meg only does what Meg wants to do, which is seldom what Buster John Allen wants to do. Buster John Allen decides to ask his grandpa for help. He has trained lots of horses. Together, they go about training Meg to be a better pony, which also teaches Buster John Allen how to be a better horseman.