This set provides four Story Blox - The Cave kits (SB-0132), all packed into a sturdy storage case for sharing in the classroom. Contains 472 parts. Builds 8 different character or objects that all light up. Directly compatible with other brick building construction sets. Requires four 9V battery. The Cave is an exciting adventure story where Seymour E. Blox climbs a mountain on faith alone and discovers a secret cave that holds the answers to many mysteries about the Earth's history, extinct animals, old memories, a new home, and much more. Journey deep into the cave and discover shimeji mushrooms and glowing pilea flowers, and prehistoric creatures when you build a Mastodon and T-Rex!