Corinne LaMer defeated the wicked Jumbie Severine months ago, but things haven't exactly gone back to normal in her Caribbean island home. Everyone knows Corinne is half-Jumbie, and when local children begin to go missing, suspicious eyes turn to Corinne. To rescue the missing children and clear her own name, Corinne goes deep into the ocean to find Mama D'Leau, the dangerous Jumbie who rules the sea. But Mama D'Leau's help comes with a price…