Taken captive by the siren queen and held miles under the sea, Jami and Viv must find a way to escape so she can't use them as leverage. While aboard her vessel, the siren queen continues to use Jami and Viv in her hunt for the magical object that will give her power over the entire ocean.Finn and Lia will do anything, including sacrifice the ocean's freedom, to save Jami and Viv. Faced with difficult choices, they find themselves partnering with unlikely allies to bring their friends home.Can they save their friends and bring an end to the siren queen's reign?The siren queen is relentless in her hunt for power. Finn, Lia, Jami, and Viv must be prepared to risk it all to save themselves and their home.