A family of sadistic butchers lives deep inside the backcountry. From the dead of winter to the dog days of summer, anyone who crosses their path is dead meat.
When a series of murders in the run up to Christmas are found to be linked, FBI Special Agent Natalie Parker is tasked with tracking a pair of psychotic serial killers that have based their personas on Santa and Mrs Claus. As Christmas approaches, they slaughter their way through their naughty list, playing a cat and mouse game with the FBI and leaving a trail of bloody bodies in their wake.
If event planner Celeste Everett is going to save her business and give her niece a happy Christmas season, she is going to need help. When the nanny she hires turns out to be a man, Celeste surprisingly realizes she may have also found Christmas love for herself.