The Tardis's new inhabitant has barely landed and the Earth is at the mercy of deadly Christmas trees and the menacing Sycorax. CAST: Billie Piper, David Tennant

Press Release Synopsis:
It is Christmas, but there is little cause for celebration as planet Earth is invaded by aliens known as the Sycorax. It's up to Rose (Billie Piper) and the newly-regenerated Tenth Doctor (David Tennant) to save humanity, with a bit of help from her boyfriend Mickey and her mother Jackie. But can Rose trust a man with a new face?