After giving up her tail for an international banker, Isabella of the Mediterranean kingdom is aged beyond recognition. The horrified banker abandons her on the fog-drenched shores of southwest England, leaving her to face a difficult human journey as a plain and practically destitute fifty-three-year-old woman.
With the help of a magic tablet and online mermaid support, Isabella evolves into Barbara Davies. Along the way, she encounters a cast of unforgettable characters, among them ex-mermaids, supportive and not-so-supportive women, deserving and undeserving men, and several New Agers.