Churning Waters introduces the story of young Marguerite Westley, a heroine who discovers her family tree holds a secret link to the world of the Sironians - an underwater race of dark and powerful beings. The stunning beauty of these sirens can only be matched by the danger they represent.

Marguerite struggles to understand how she, a half-breed, fits into this new and mysterious world. Inevitably drawn to William Avery, a powerful young Sironian sworn to watch over her, Marguerite finds herself in a reluctant attraction that turns into romance.

She must prepare for a climactic collision between the human world of her past and the Sironian world she has now embraced.

Seventeen-year-old Marguerite Westley never imagined the mysteries held in the familiar coastal waters of Murrells Inlet. As she begins to develop abnormal abilities, her quest for answers entangles her in the hidden world of the Sironians.

Through a twist of fate, a sect of Sironian protectors, including the mysterious William Avery, has broken from Theron's regime to safeguard Marguerite. Her strength is put to the test as she joins the forces enlisted to guard her, risking her heart and ultimately her life in the process.

As affections between the pair ignite jealousy from Theron's granddaughter, the jilted Aria, the conflict escalates. Theron's forces threaten to attack all that she loves, forcing Marguerite to make the ultimate sacrifice.