Lowcountry sorcerer, Julianna Riley, barely escapes death on the evening of the summer solstice while many of her coven plunges to their deaths. Instinctively, she tries to retreat o her Wadmalaw Island home off the coast of Charleston, South Carolina. Ensconced in her sanctuary, she's unaware of a series of murders across the country, until one of them strikes her family. Julianna and her childhood friend, Michael begin a journey of grief that quickly becomes a quest for the ancient sources of witchcraft. The search leads them through Lowcountry tides that sweep them backwards into medieval Europe. As the seas toss them with waves of loss, Julianna must swim or drown in an ocean of accusation from the remains of the coven and the FBI.