My son loves to 2 years and a half stone. He already has dvd, he loves the song he already knows by heart and now through this book he loves his stories too. There six stories in this book: - Stone anniversary - T shirt favorite rock - Stone picnic - Pebble in the supermarket - Pebble beach - Pebble amusement park In these stories pebble now 4 years old, so this allows a broader vision on the outer world compared to older editions