Sam Ford expected her summer vacation on Nantucket Island to be pretty much as it always has been. Fun in the sun and maybe some surfing. But it's her first year without her caretaker and companion, Nana, who has worked to help cure Sam's club feet as long as the precocious twelve year old can remember. Little could Sam imagine what was in store for her on her first surfing expedition of the summer as she finds herself pulled out to sea by a mysterious riptide, only to land on a strange island almost a thousand miles away from her vacation home and family. She soon learns, she's been brought to the mysterious place to help a special creature, a mermaid who has grown a wrong tail, which will never do, given her special circumstance and place in mermaid society. Follow Sam and mermaid Lorelei as they come to grips with their differences and learn to appreciate the greatness of the gifts their unique situation has afforded them. Travel with them as they overcome the fury of a kraken, becoming great heroines, and change the way a whole culture comes to view their uniqueness among the world of the merfolk.