Alea has found out she is a mermaid! She finally knows why she always felt so strange. But what happened to her mother more than ten years ago? And why does the entire underwater world seem almost extinct? Alea can't possibly be the last of her Sea People in the world. She sets off with her friends, the Alpha Cru, to a mysterious lake. Alea isn't the only one hoping to find answers there. Lennox wonders whether he is a merman. Is that why he and Alea both feel magically attracted to one other?