A love-struck mermaid named Aquamarine supplies adventure and insights to two twelve-year-old girls, life-long friends who are spending their last summer together before one of them moves away.
Young mermaid Emily Windsnap must turn for help to someone she hoped to never see again when she awakes the huge and terrifying octopus-like monster known as the kraken.
Twelve-year-old Boom Broom thought his life couldn't get any worse, until he stumbles upon a foul-tempered merbaby and must find a way to return her to the world of the merfolk in the hopes of breaking the curse she seems to have put on Boom.
After finally convincing her mother that she should take swimming lessons, twelve-year-old Emily discovers a terrible and wonderful secret about herself that opens up a whole new world.
As they search for their missing father near their Cornwall home, Sapphy and her brother Conor learn about their family's connection to the domains of air and of water.
With Soop the mermaid threatening Fairy Haven with a flood, three fairies, Rani, Tinker Bell, and Ree, set out on a perilous journey in search of a magic wand which Soop has demanded in exchange for pulling back the waters.
