A young mermaid. A sea witch out for revenge. Can Brynn Finley become a sea guardian and help humans in danger when she just barely started the sixth grade?

Brynn is the only mermaid in school who hasn’t been able to learn magic. Until she can unlock the secret to magic spells, she can’t become a sea guardian like her parents and friends. On her quest to solve this mystery, Brynn and her best friend encounter a loveable sea turtle, a pair of selkie sisters, and Phaedra, the great and terrible sea witch. But soon Brynn is over her head in trouble. She must learn to ask for help, do her best, and follow the merfolk oath if she wants to become a guardian of the sea!

For Readers 8-12 from author A.M. Luzzader.