Zerie has learned that the real threat to Oz is Glinda the "Good" and her alliance with the Nome King, and now Ozma has magically transformed her into a mermaid and asked her to infiltrate Glinda's underwater palace, and free the Glass Cat and her friend, Brink--and she still is not completely sure who she can trust.

Based on 'The wizard of Oz' by L. Frank Baum. "Sequel to 'Bewitched in Oz.'"--Front cover.