A teenage girl discovers the truth about Father Christmas.

Sophie's 18th birthday becomes a bloodbath when monsters descend upon her house, devouring the guests and killing anyone who tries to leave. To survive the night, Sophie must face her destiny: monsters are real and she's the only one who can stop them.

On her first business trip away after the birth of her child, a young mother has to fend off the unwanted advances of her boss, triggering a traumatic childhood event involving a monstrous figure called Mama.

Isolated yet together, two women share another ordinary day.