Nadia Almeida attends one of North America's first integrated high schools, where not only human kids attend but also elves, gnomes, and even a troll. Still, Nadia is surprised when mermaid Nerine Kwan rolls into class one day inside a special custom-built wheelchair. No mermaid had ever attended school on land, so Nadia is intrigued. Why would a mermaid want to go through all the trouble of living on land, bound to a clunky carriage and subject to taunts from her fellow students? As she gets to know Nerine, she finds her academic interest becoming personal, and learns the costs of befriending this strange new girl.