Rachel is new to the Kingdom of Neptunia, and she has two secrets--she is half human which only her friend Shyanna knows, and her boy friend is a human boy, Owen, who does not know know she is a mermaid.
Rachel is worried that she has done something to upset her human boyfriend, Owen, because lately he has not come to visit her in Neptunia--but it turns out that the truth could put an end to their relationship completely.