Leapfrog Tag Activity Storybook Go Diego Go!: Underwater Mystery Use your Tag Reader to bring this story about Diego and Alicia to life as they board the Rescue Submarine to save Lucy the mystery fish With its amazing touch technology, the Tag Reader makes learning to read an exciting experience The Tag library includes over 20 books and games featuring characters from TV, movies and classic tales Children can build vocabulary and reading skills throughout the story and with interactive learning activities Children can earn online rewards and parents can connect the Tag Reader to the online LeapFrog Learning Path to see what their child is learning.