The Little Mermaid and her new prince have embarked on a quest at sea for something with the power to bring down the oppressive Atlantean empire. But as they sail to the Great Whorl at the Center of the Ocean, she begins wonder if she can trust the shady pirate captain they've hired; trust the handsome prince who's swept her off her feet, but is hiding something sinister; or even trust her own feelings. All this, plus a fierce sea battle and a malevolent swamp monster who dances a mean jig!