Surf's up for Barbie as she returns as Merliah, the fun and fashionable surfing champion who's also a magical mermaid princess! In this exciting sea-quel, Merliah makes a splash when she heads to Australia for the ultimate surfing competition. When the evil mermaid Eris escapes from her whirlpool , thanks to Kylie Morgan who steals Merliah's necklace, with plans to take Callissa's spot on the throne of Aquellia and get the power of Merilia, Merliah and her sea friends dive in to stop her. Merliah stops Eris from getting on the throne, and gets the power of Merliah and a new tail, too!! It's a fresh new adventure where Merliah learns that anything is possible if you stay true to yourself