The Lost Gold (Rescue Princesses #7‪)‬

These are no ordinary princesses--they're Rescue Princesses!Princess Isabella loves the rain-forest creatures that live in her kingdom. She takes her responsibility as a Rescue Princess very seriously, and watches out for all the animals.Her peaceful kingdom is disturbed when treasure hunters start digging up the forest. They've trapped a baby monkey and Isabella knows that she's the only one who can save him!