On the eve of her resignation, Sheriff Sterling Marsh prepares for a bleak winter in Drybell, Connecticut, after a string of bad decisions leaves her life in shambles. Two weeks before Christmas and expecting a long night of paperwork and quiet celebration with the friends she's grown to know and love, she's surprised when an unnerving stranger appears in the form of a witch.

A silent, menacing figure, the witch appears to be ripped straight out of a fairy tale, complete with a tall, pointed hat, and black clothing. But when strange things begin happening all over town, Sterling begins to suspect that there may be more to the witch than meets the eye.

As she works to maintain order as the world crumbles around her, the witch's mysterious presence throws her world into a frenzy, threatening to send the sleepy town spiraling face-first into the darkest night it's ever seen.