Have you ever thought of prime numbers as members of an exclusive club? One prime number, Double-Trouble Two, thinks primes should be the only numbers allowed in the clubhouse, but when the rest of the group invites another number as a guest (and yet another non-prime number sneaks in), trouble breaks out. In the end, Double-Trouble Two, and the rest of the prime numbers, learn a valuable lesson about inclusion. Young readers can find this Easy to Read book an inviting way to learn more about mathematics through the eyes of prime numbers.