<p>Meri Murphy is not a mermaid's daughter. At least, she doesn't think she is.</p><p><br></p><p>What she does know is that her father is the town drunk who tells anyone who will listen that his wife hadn't left him fourteen years ago. No, she was a mermaid, and returned to the sea to save her people and all of Ireland from an evil tyrant.</p><p><br></p><p>Meri wishes he would stop telling that story.</p><p><br></p><p>Everything changes during a school trip to the Cliffs of Moher. First, Meri learns that mermaids were once called merrows, and their children are the merrowkin. While at the Cliffs she glimpses a golden tower on the waves, and learns about a city that lies at the bottom of the bay between Ireland above and the land of gods below, a barrier between the two worlds that rises once every seven years. Suddenly, her father's stories aren't the strangest things she's heard.</p><p><br></p><p>Accompanied by her friend, Aodhan, Meri embarks on a quest to discover what really happened to her mother, and hopefully bring her home.</p>