Summary: Rose and the Doctor visit a world in the midst of an ice age.
The people call their planet Winter because it always is here, a world in the midst of an ice age that will last for many thousands of years yet.
Nevertheless, it’s a beautiful place, a lot like the kinds of scenes that grace Christmas cards back on earth. Thick snow, towering evergreen trees, hoarfrost making feathery patterns on window glass, and roaring log fires for warmth.
Wrapped in the softest furs, Rose and the Doctor sit before one of the fires, sipping the alien equivalent of hot spiced cider from tall earthenware mugs. Rose feels like a kid at Christmas.