Aaliyah Michaels makes her living diving in the Gulf of Mexico for sunken artifacts. However, she isn't your average diver. Something that Aaliyah found recently has made her an exceptional diver—she discovered an artifact that allows her to transform into a mermaid.

At the same time, she discovered something else. The second artifact has led to Aaliyah being stalked by aquatic humanoids. But are these aquatic humanoids truly aggressive? Or is there more going on? What is their connection with the second artifact that Aaliyah found? With the help of her research partner and a new friend, Aaliyah will find out the answers to these questions—and many more!