Doctor Who: The Doctor, the Widow and the Wardrobe

The Doctor, crash-landing on Earth while fleeing the festive season, becomes an unlikely guide for grieving widow Madge Arwell and her children. He offers them not mere Christmas cheer, but a magical portal to a frost-laden forest world of sentient trees and glowing lanterns. This wintry wonderland, however, conceals a planetary-scale threat, forcing the family and the Time Lord into an alliance to save not just the enchanted woods, but also their own hearts from a lingering sorrow.