In this animated sequel to Fairytopia, Barbie stars as the enchanted fairy Elina, who learns that the wicked sprite Laverna has captured her friend Nalu, a merman prince. Laverna wants to rule Mermaidia, and the prince holds the knowledge she seeks. Elina joins forces with the reluctant mermaid Nori to save Nalu and keep Mermaidia in the hands of the benevolent Enchantress, but she may have to sacrifice her wings to ensure peace for all.