Elina (played by Barbie) travels to Mermaidia to save her friend Nalu, the merman Prince. Prince Nalu has been kidnapped in an attempt to learn the whereabouts of a special berry that will make Laverna the most powerful fairy in Fairytopia even more powerful than the Enchantress! It's up to Elina to stop them, but she can't do it alone. She'll need the help of Nori, a headstrong mermaid who doesn't trust outsiders and wants nothing to do with Elina. Winning Nori over isn't easy, but Elina will have more challenges yet to come. Saving Nalu could require the greatest sacrifice of her life: her wings. Can she do it, or will Fairytopia fall into the hands of Laverna forever?