Doctor Who: The Next Doctor

The Tenth Doctor materializes in Victorian London, where Christmas cheer is shattered by the arrival of silver giants from another reality. Cybermen are on the march, plotting humanity's demise. The only hope lies with an eccentric gentleman who also calls himself the Doctor—but how can a Time Lord have a duplicate? Forced into an unlikely alliance, the two must unravel the mystery of this second Doctor, confront the monstrous Cyber-King, and save the city from mechanized enslavement before the clock strikes midnight.