It's hard being a mermaid in the modern world. Laguna Irving knows this all too well, considering the fact that she is a mermaid living in the heart of New York City. Over the years, her family adapted to their environment as surface-mers, content to live in hiding amongst humans. Now in college studying marine biology against her parents' wishes, for obvious reasons, Laguna wishes for something interesting to happen to break the monotony of her "normal" everyday life. That is, until a late-night accident in the city aquarium comes back to haunt her in the wake of a would-be reporter. Now Laguna has to fight to protect her secret, or else risk exposure to people better kept in the dark, including a certain fellow marine biology major...