Being an 18-year-old mermaid is never easy...Serena Cyania's world has been turned upside down. First she gets separated from her younger sister in the ocean, and the next thing she knows, she's being caught in a net and dragged ashore by humans. After countless amounts of tests, Serena is put on exhibit at the local aquarium. In charge of her exhibit is a 20-year-old college student named Kyle Markham. Because of the numerous hours they spend around each other, Serena and Kyle begin to bond. Soon, Serena begins to develop romantic feelings for this human. Little does she know that her world is going to keep getting crazier. Her younger sister, Serah is trying to find her and break her out of captivity, and a rich, Australian businessman is trying to buy Serena and put her on display on the other side of the world. What will become of this mermaid?

Katie and Jason have been dating for two years. They're in love and would do anything for each other. It's the last day of school and Jason and Katie decide to go to a party that night. When Katie finds Jason with another girl, she's heartbroken. As the summer goes on she gets a job. At her job she meets Thomas. Thomas starts out as just a friend, but as summer goes on their friendship turns into more than that. But is Katie ready for another relationship?

19 year old Carlie Nicholson, her life is perfect, not exactly, she adores her boyfriend and he is the only thing keeping her together. One rainy day after one of their dates, Carlie is left alone to go to her car and pick him up while he is making a phone call, until something suspicious happens, and she finds herself in a trunk.

Enter Elly Moss, The quirky 16-year old with hopes that something special will happen when she finds herself cooped up in a car on the way from her comfy New York high-rise to the beach manor in Cape Cod. While shopping at a mysterious book store and stumbling over a book that 'calls to her', she finds a mystical spell that could make her vacation a little more sweeter. Soon enough, Elly is singing under the mooon, growing scales and even finding herself a handsome merman himself. But when her hometown love is found missing, she has no choice but to risk her legs for his life.