A thrilling and emotional festive special featuring major guest stars, and the Doctor's most iconic and deadly adversaries.
 
The Doctor is locked away in a high-security alien prison. Isolated, alone, with no hope of escape. Far away on Earth, her best friends, Yaz, Ryan and Graham are having to carry on with their lives without her. However, they soon discover a disturbing plan forming. A plan which involves a Dalek. How can you fight a Dalek without the Doctor? Even with Captain Jack's help, the gang are set to face one of their biggest and most frightening challenges yet...