Poppy the Dog has watched her puppies grow up. Poppy wants each of her pups to explore traditions around the world. Poppy has a bag of magical charms. In each book Poppy gives one of the charms to a puppy. Once placed on their collar, the charm takes the pup to a family who is preparing for a special occasion.

In this book, Puppy Charlie is given a magical shamrock charm. It whisks him off to Ireland, where a welcoming family shows him how they prepare for Saint Patrick's Day. As Charlie participates in their fun festivities, he begins to wonder what the shamrock charm means. Join the pup on his adventure to see if he finds out.