There's a big festival in town, and Cassie's favorite singer, Jacey Day, is coming to perform. Cassie can't wait to see her! But Jacey's backup singers are sick. Without them, the performance could be ruined. Luckily, Cassie has a plan! Can she use her newest charm to make Jacey's performance sparkle? Each book comes with a charm just like Cassie's. Collect them all!