"Can Zerie's magic help save Oz? "Friends are strongest together," Zerie Greenapple's grammy has always told her. And for the most part, it's what Zerie experienced on her way to Oz to help defeat the enemy. But now everything has changed. With Oz on the brink of a civil war, Zerie and her friends Vashti and Tabitha must infiltrate Glinda the Good's palace in order to help Ozma win back the rights of Oz's citizens. But to do so, they have to split up. Zerie travels by water, Vashti by land, and Tabitha by air. As Zerie transforms into a mermaid and enters the underwater realm of Aquaria, her mission is put to the test. Without her friends, will Zerie's magic ultimately be used for good... or evil?"