BJ and Riff find a pirate map, but to find the treasure, they must be able to count. Since Baby Bop has not learned to count yet, Barney offers to help teach her. | It's time for a music concert in the park. As Riff works on his "one-man band," the others make posters for the show. Everyone enjoys Riff's calypso rendition of a favorite song, and they all enjoy helping each other.