The Rainbow Opal (Rescue Princesses #11)

These are no ordinary princesses-- they're Rescue Princesses!Princess Summer can't believe that she's been invited to join the Rescue Princesses. Even better, the other girls are all visiting her for a vacation.The Rescue Princesses have barely arrived when their animal rescue skills are put to the test. But the princesses are always ready to help--if one of Summer's animals is in trouble, they're on the case!