Barbie "Malibu" Roberts and Barbie "Brooklyn" Roberts turn into mermaids to save a sea kingdom in an epic underwater adventure.Barbie "Malibu" Roberts and Barbie "Brooklyn" Roberts turn into mermaids to save a sea kingdom in an epic underwater adventure.Barbie "Malibu" Roberts and Barbie "Brooklyn" Roberts turn into mermaids to save a sea kingdom in an epic underwater adventure.