In snow-bound Havenwood, Detective Claire Mallory investigates a series of murders where victims are strangled with their own scarves. Partnering with forensic psychologist Dr. Ethan Thorne, their professional collaboration sparks a slow-burn romance amidst the escalating danger. They uncover a chilling connection to a decade-old blizzard tragedy involving Ethan’s sister, Lily. The killer, driven by profound "frozen regret," forces them to confront the past. Can their burgeoning love survive the devastating twist and heal the town's scars?