Twenty years after the disappearance of her daughter, recovering alcoholic Darlene Hagen is preparing to host her family's Christmas celebration with her best friend. On Christmas Eve, Darlene's ex-brother-in-law arrives unannounced, bearing nostalgic gifts and a heavy secret. Trapped together by a dangerous storm, she soon finds herself caught between reason and ruthless instinct as a battle of wits escalates into a violent game of revenge.