Lana McDowell is happy to be spending the summer along the coast with her father, until a beautiful stranger moves in down the street and her dreams become filled with drowning mermaids. Now she must race to become something she never knew she could be in time to save a dying underwater kingdom.

When a mysterious boy appears on the beach outside her house, Lana Marinsky thinks little of it until a freak Tsunami washes away everything she knows. Now Lana must set mythology aside and learn what it really means to be mer.