Grace Gallo has never been away from home. She has never broken the law, done drugs, or earned any grade lower than a B+. She is about to go off to one of the most prestigious colleges in the country. Above all, Grace Gallo does not believe in mermaids.
All of that changes when she wakes up on the mysteriously beautiful Ridley Island and is greeted by a family ageless, immortal mermaids who also drifted in from the human world at varying points in history and places in the world. On her journey, she discovers that as powerful, beautiful, and indestructible as each of her mermaid family members seems, none of them has truly figured out how to be happy in herself. They have lived, some of them for hundreds of years, in a prison-like Archipelago where they must hide from humans and appease their tyrannical overlords. Especially after listening to the mermaids assert repeatedly that immortality renders life meaningless, Grace believes that she would do anything to return to the life that she lost and attempts to, but her botched bid for escape soon lands her and the others in unprecedented worlds of trouble, danger, and pain.
However, Grace also focuses on improving her own situation and the experiences of her fellow mermaids by developing a formidable magical power and finding a new island they can colonize independently. In the face of tremendous adversity, she comes to deeply care for the five mermaids who comprise her new family very much: there is Alex Jankowitz, the second youngest, who is highly prone to jealousy and moodiness but surprisingly compassionate in a tight spot; Sky Mahatma Galashiels, an overly sensitive flower child born in 1952 and aficionado of marijuana in a secret treehouse at the heart of the rainforest; Nona, the seemingly adolescent matron of the group born in 1407; Deirdre, a conspicuously brawny 415-year-old Irish pirate and direct descendant of Grace O'Malley whose only weakness is for those with whom she falls in love; and Jehona, who at 123 years old, is the only person able to resist the mind-control power of the opposition. In the face of tremendous adversity, Grace comes to deeply care for her mermaids, but when all is said and done, just one thing remains missing for Grace: her humanity. Ages 16+