In a small town, the holiday season turns sinister as a series of interconnected stories unfold. Radio DJ Dangerous Dan keeps the Christmas spirit alive with festive tunes while strange occurrences happen throughout the town. A trio of teens sneaks into their school to investigate a gruesome murder from the previous year, only to uncover something far more horrifying. Meanwhile, a family ventures into the forest to find the perfect Christmas tree but ends up encountering a darker force that follows them home. As tensions rise, their once cozy home becomes a battleground for survival.

Across town, another family faces turmoil when their son exhibits disturbing behavior after a forest outing. In the backdrop, Santa Claus himself deals with an unprecedented crisis at the North Pole. His trusted team of elves turns into feral, monstrous beings threatening to destroy everything in their path. As these varied, spine-chilling events transpire simultaneously, the true nature of the holiday spirit comes into question, taking both the characters and viewers on a thrilling and dread-filled journey.