The Ice Diamond (The Rescue Princesses #10)

Princess Maya welcomes the Rescue Princesses to the kingdom of Lepari. It's a beautiful land, where the king has sworn to protect the rare snow leopards that live in the mountains. Maya and her new friends aree devastated to learn about a secret plan that will harm the leopards. The girls want to save them, but first they must convince the Lepari royalty that the leopards are really at risk.