Join Barbie "Brooklyn" Roberts, Barbie "Malibu" Roberts, and her sisters Skipper, Stacie, and Chelsea on an underwater adventure as they transform into mermaids to help save the world of Pacifica. In this fish-tale of friendship, adventure, and bravery, Barbie, Barbie, and family experience first-hand what it's like to balance the worlds above and below the sea and learn a lesson in finding their inner powers along the way.