In a snow-covered town just days before Christmas, the festive cheer turns to terror as a mysterious virus begins to spread, transforming holiday shoppers and carolers into ravenous zombies. Lights twinkle over deserted streets as survivors huddle together in makeshift shelters, hoping to make it through the season. The town's last remaining defenders must navigate a world where Christmas decorations become eerie landmarks, and candy canes, holiday lights, and broken ornaments are repurposed as weapons against the undead. As hope fades, they cling to the holiday spirit, praying for a Christmas miracle that might save them from the relentless horde.