White consumes the New Hampshire landscape, as troops move in on a survivalist cult following a spate of unnaturally severe blizzards. The Special Forces group, White Shadow, are searching for the missing fragments of a US Air Force jet, which crashed while engaged in top secret test flights over the region.
The Doctor and Leela have arrived at quite literally the wrong time. Thanksgiving is approaching. Traditionally it is a holiday all about home and family. This year all of that is lost.
Lost: like the local community, in the grip of something far more sinister than a harsh winter. Like young Amber Mailloux, victim of a broken home that won't even settle in one place. Even White Shadow, entirely out of their depth and up against an enemy that not even the Doctor can find in this world of white.
An enemy which promises the bleakest of midwinters for the people of New Hampshire and, certainly before springtime, the end of life on Earth...