Brynn Finley is starting high school. And she turns out to be the only mermaid in the class who is unable to perform magic! And without magical abilities, you cannot become a guardian of the sea, like all the other mermaids. At school and at home, Brynn has to pretend to be a skilled sorceress, but she realizes that her lie will not last long. Trying to solve her problem, the little mermaid contacts the powerful sea witch Phaedra. But she only gets more bogged down in deception: after all, in exchange for help, the witch demands a service in return. And her intentions are not at all good... How to get out of the web of lies that you yourself have woven, and prevent the impending disaster?