# of Pages: 298
Rio and her twin, Bay, were born in the underwater town of Atlantia and it is now their chosen time to decide if they wish to stay below or go up to the surface for the rest of their lives. People in the underwater city believe that life above ground is dangerous, labor intensive, and fairly short while residents of Atlantia are believed to have an easy life where most people live a very long time. Unfortunately, their mother, Oceana, was recently found dead and many suspect foul play. Rio has always dreamed of going above, but now that their mother is gone she has promised Bay she will stay with her down below. All decisions are final in this ceremony and there is no going back and forth allowed. Rio is shocked when Bay ends up leaving her and choosing to live above the water, but she is ushered away before Rio has a chance to ask her why. She does have time to utter one word that alerts those near to her of what she truly is, which is a siren. Her mother has trained her to keep that truth a secret for reasons unbeknownst to Rio. Can Rio survive in the one place she has wanted to leave her entire life without her mother or sister? Why would her sister choose to leave after making her promise they would stay together forever? Is it possible to bridge the two societies together?
This novel is fresh and interesting right from the beginning. It feels like yet another futuristic story, but the setting and characters quickly help you to forget all of that as you cannot help but get immersed in the story. Rio has many plot details to figure out in order to find out the truth of her family and Atlantia itself. While many great characters are introduced, it does take Rio awhile to discern whom she can and cannot trust which makes the journey more interesting for the reader. It also appears that this is going to be a stand alone novel which is refreshing in a world where every book seems to have three sequels. Recommended for students who enjoy fantasy.