A powerful spy infiltrates the Ocean Academy and targets Coral, dismantling her life piece by piece. Will Coral's newfound powers be enough to save her from the devastating effects of the Call of the Siren? Believing she's escaped her past, Coral returns to the Ocean Academy for her second year. But before she arrives, she is shown a harrowing look at her potential future. Scared by the possibilities, she devotes herself to strengthening...