In the playroom, the Princess and Bona stumble upon a mysterious treasure map! The girl and her dog are then swept away into a world of fantasy, where, dressed as comical pirates, they explore the island. Following the map, they locate the treasure chest. However, the Pirate-Prince suddenly appears and commandeers the treasure for his ship! The Princess and Bona engage in an epic nautical chase, which leads to them accidentally opening the chest to find it filled with special doggy bones for Bona.