In this 2nd volume, the girls are on a quest to acquire weapons so that they can fight against the evil Zagato, and rescue the true ruler of Cephiro, restoring the troubled land to peace and harmony.

I was glad to see that all of the girls go through a little character development in this volume, adding a little more depth to their personalities. But they still aren't exactly complex characters, and the story remains fairly simple as well.
Sometimes I like that though! I like having a fluff read that isn't amazingly life-changing, but is just enjoyable and fun. Definitely worth it to continue reading the series!