Four girls are about to become princesses! But can they keep their kingdom safe?
In the Jewel Kingdom, four girls rule: Roxanne is the Ruby Princess, Sabrina is the Sapphire Princess, Emily is the Emerald Princess, and Demetra is the Diamond Princess.
Some of Princess Demetra's subjects have become trapped inside a mountain. She must risk everything-including her crown-to rescue her subjects!
A full sheet of holographic stickers in every book!