Winter has clawed its way into the heart of Parrish Mills, and something far darker may have come with it. When Mia Graves, a witch with a habit of getting into trouble, and her best friend Riley Whittaker stumble across a grisly scene along the Wabash River, they find it reeks of dark, forbidden magic and has left at least one charred body in its wake.

With the help of young Bobbi Crawford, the further Mia and Riley dig into the events that took place on that cold Indiana morning, the more dire their circumstances reveal themselves to be. Between a stolen grimoire and a group of young witches who may not know how dangerous their actions are, shadows loom in the dark of winter.

And one of those shadows may be more dangerous than anyone imagined.