Torchwood is a British science fiction television programme created by Russell T Davies. The series is a spin-off from the 2005 revival of the long-running science fiction programme Doctor Who. Torchwood follows the exploits of a small team of alien hunters, who make up the Cardiff branch of the fictional Torchwood Institute, which deals mainly with incidents involving extraterrestrials.

The first wave of an alien invasion coincides with a New Years Eve party in a Welsh valley.