After the death of her mother, Zoey Shaw moves with her father to the Gold Coast for a better change and scenery. Right after befriending three girls, she and her new friends wind up experiencing a strange, but yet thrilling transformation. Altogether, Zoey tries to conceal her new fishy secret and abilities from those around her.

Emma Gilbert's cousin is moving to the Gold Coast. Roe Sonata hails from BC Canada and she's known Emma, Zane, and Cleo since she was five; but she has a bit of a secret, okay she has a few to unravel when she arrives. The first, is that when she gets wet she grows a tail, and the second is she's been e-pals with Zane and the two have been dating online.