Christmas Eve the holiday spirit gets a deadly twist in New York City’s most exclusive skyscraper. When a high-stakes holiday party turns into a nightmare, security guard Jack Winters finds himself caught in a brutal holiday showdown. A mysterious Santa vigilante, a tech-savvy hacker named Krampus, and a swarm of murderous toys have the building under siege. Teaming up with an eccentric crew of party guests—including a quirky scientist, an eccentric maintenance man, and a hard-hitting FBI agent—Jack and his newfound allies must survive the night