The Scottish National Antarctic Expedition is in trouble. One of its members, Allan Ramsay, died and was buried. Now, the other members are disappearing, one by one. And it appears that the "ghost" of Ramsay is the one taking them. Jamie, to annoy Zoe, plays Bill Smith's bagpipes. At the Doctor's suggestion, he plays Christmas carols, and the others sing along. Suddenly the spirits of the missing expedition members appear, and one by one they solidify. The "ghost" of Ramsay watches for a while, then leaves.